diff --git a/core/src/com/unciv/logic/GameInfo.kt b/core/src/com/unciv/logic/GameInfo.kt
index ce7b625718..535f645e47 100644
--- a/core/src/com/unciv/logic/GameInfo.kt
+++ b/core/src/com/unciv/logic/GameInfo.kt
@@ -60,7 +60,7 @@ class GameInfo {
 
         player.startTurn()
 
-        val enemyUnitsCloseToTerritory = player.getViewableTiles()
+        val enemyUnitsCloseToTerritory = player.viewableTiles
                 .filter {
                     it.militaryUnit != null && it.militaryUnit!!.civInfo != player
                             && player.isAtWarWith(it.militaryUnit!!.civInfo)
@@ -80,7 +80,7 @@ class GameInfo {
         if (tileToPlace == null) {
             // Barbarians will only spawn in places that no one can see
             val allViewableTiles = civilizations.filterNot { it.isBarbarianCivilization() }
-                    .flatMap { it.getViewableTiles() }.toHashSet()
+                    .flatMap { it.viewableTiles }.toHashSet()
             val viableTiles = tileMap.values.filterNot { allViewableTiles.contains(it) || it.militaryUnit != null || it.civilianUnit != null }
             if (viableTiles.isEmpty()) return // no place for more barbs =(
             tile = viableTiles.getRandom()
@@ -92,10 +92,10 @@ class GameInfo {
         tileMap.gameInfo = this
         tileMap.setTransients()
 
-        for (civInfo in civilizations) {
-            civInfo.gameInfo = this
-            civInfo.setTransients()
-        }
+        // this is separated into 2 loops because when we activate updateViewableTiles in civ.setTransients,
+        //  we try to find new civs, and we check if civ is barbarian, which we can't know unless the gameInfo is already set.
+        for (civInfo in civilizations) civInfo.gameInfo = this
+        for (civInfo in civilizations) civInfo.setTransients()
 
         for (civInfo in civilizations) {
             // we have to remove hydro plants from all cities BEFORE we update a single one,
diff --git a/core/src/com/unciv/logic/automation/UnitAutomation.kt b/core/src/com/unciv/logic/automation/UnitAutomation.kt
index b37eb62b78..a11937d6aa 100644
--- a/core/src/com/unciv/logic/automation/UnitAutomation.kt
+++ b/core/src/com/unciv/logic/automation/UnitAutomation.kt
@@ -146,7 +146,7 @@ class UnitAutomation{
     class AttackableTile(val tileToAttackFrom:TileInfo, val tileToAttack:TileInfo)
 
     fun getAttackableEnemies(unit: MapUnit, unitDistanceToTiles: HashMap<TileInfo, Float>): ArrayList<AttackableTile> {
-        val tilesWithEnemies = unit.civInfo.getViewableTiles()
+        val tilesWithEnemies = unit.civInfo.viewableTiles
                 .filter { containsAttackableEnemy(it,unit) }
 
         val rangeOfAttack = unit.getRange()
diff --git a/core/src/com/unciv/logic/city/CityExpansionManager.kt b/core/src/com/unciv/logic/city/CityExpansionManager.kt
index c3f531cf33..e34dad211b 100644
--- a/core/src/com/unciv/logic/city/CityExpansionManager.kt
+++ b/core/src/com/unciv/logic/city/CityExpansionManager.kt
@@ -95,6 +95,8 @@ class CityExpansionManager {
         for(unit in tileInfo.getUnits())
             if(!unit.civInfo.canEnterTiles(cityInfo.civInfo))
                 unit.movementAlgs().teleportToClosestMoveableTile()
+
+        cityInfo.civInfo.updateViewableTiles()
     }
 
 
diff --git a/core/src/com/unciv/logic/city/CityInfo.kt b/core/src/com/unciv/logic/city/CityInfo.kt
index cc54060542..728c88ce63 100644
--- a/core/src/com/unciv/logic/city/CityInfo.kt
+++ b/core/src/com/unciv/logic/city/CityInfo.kt
@@ -35,6 +35,7 @@ class CityInfo {
     constructor()   // for json parsing, we need to have a default constructor
     constructor(civInfo: CivilizationInfo, cityLocation: Vector2) {
         this.civInfo = civInfo
+        this.location = cityLocation
         setTransients()
 
         // Since cities can be captures between civilizations,
@@ -48,7 +49,6 @@ class CityInfo {
             else name = civInfo.getNation().cities.map { "Newer $it" }.first{ !allExistingCityNames.contains(it) }
         }
 
-        this.location = cityLocation
         civInfo.cities = civInfo.cities.toMutableList().apply { add(this@CityInfo) }
         if(civInfo == civInfo.gameInfo.getPlayerCivilization())
             civInfo.addNotification("[$name] has been founded!", cityLocation, Color.PURPLE)
diff --git a/core/src/com/unciv/logic/civilization/CivilizationInfo.kt b/core/src/com/unciv/logic/civilization/CivilizationInfo.kt
index d11c4cda1d..d175fd0c77 100644
--- a/core/src/com/unciv/logic/civilization/CivilizationInfo.kt
+++ b/core/src/com/unciv/logic/civilization/CivilizationInfo.kt
@@ -26,6 +26,7 @@ import kotlin.math.roundToInt
 class CivilizationInfo {
     @Transient lateinit var gameInfo: GameInfo
     @Transient var units=ArrayList<MapUnit>()
+    @Transient var viewableTiles = HashSet<TileInfo>()
 
     var gold = 0
     var happiness = 15
@@ -203,25 +204,26 @@ class CivilizationInfo {
         return units.toList() // to avoid comodification problems (ie concurrency again...)
     }
 
-    fun getViewableTiles(): List<TileInfo> {
-        var viewablePositions = emptyList<TileInfo>()
-        viewablePositions += cities.flatMap { it.getTiles() }
-                        .flatMap { it.neighbors } // tiles adjacent to city tiles
-        viewablePositions += getCivUnits()
-                .flatMap { it.getViewableTiles()} // Tiles within 2 tiles of units
-        viewablePositions.map { it.position }.filterNot { exploredTiles.contains(it) }.toCollection(exploredTiles)
 
-        val viewedCivs = viewablePositions
-                .flatMap { it.getUnits().map { u->u.civInfo }.union(listOf(it.getOwner())) }
-                .filterNotNull().filterNot { it==this || it.isBarbarianCivilization() }
+    fun updateViewableTiles() {
+        viewableTiles.clear()
+        viewableTiles.addAll(cities.flatMap { it.getTiles() }.flatMap { it.neighbors }) // tiles adjacent to city tiles
+        viewableTiles.addAll(getCivUnits().flatMap { it.getViewableTiles()})
+
+        // updating the viewable tiles also affects the explored tiles, obvs
+        viewableTiles.asSequence().map { it.position }
+                .filterNot { exploredTiles.contains(it) }.toCollection(exploredTiles)
+
+        val viewedCivs = viewableTiles
+                .flatMap { it.getUnits().map { unit->unit.civInfo }.union(listOf(it.getOwner())) }
+                // we can meet a civ either by meeting its unit, or its tile
+                .asSequence().filterNotNull().filterNot { it==this || it.isBarbarianCivilization() }
 
         for(otherCiv in viewedCivs)
             if(!diplomacy.containsKey(otherCiv.civName)){
                 meetCivilization(otherCiv)
                 addNotification("We have encountered [${otherCiv.civName}]!".tr(),null, Color.GOLD)
             }
-
-        return viewablePositions.distinct()
     }
 
     fun meetCivilization(otherCiv: CivilizationInfo) {
@@ -254,7 +256,6 @@ class CivilizationInfo {
 
     //region state-changing functions
     fun setTransients() {
-        if(civName=="") civName="Babylon" // this is because it used to be a default but now it isn't so we can change it.
         goldenAges.civInfo = this
         policies.civInfo = this
         if(policies.adoptedPolicies.size>0 && policies.numberOfAdoptedPolicies == 0)
@@ -263,16 +264,13 @@ class CivilizationInfo {
         tech.civInfo = this
         diplomacy.values.forEach { it.civInfo=this}
 
-        for (unit in gameInfo.tileMap.values.flatMap { it.getUnits() }.filter { it.owner==civName }) {
-            unit.assignOwner(this)
-            unit.setTransients()
-        }
 
         for (cityInfo in cities) {
             cityInfo.civInfo = this // must be before the city's setTransients because it depends on the tilemap, that comes from the civInfo
             cityInfo.setTransients()
         }
         setCitiesConnectedToCapitalTransients()
+        updateViewableTiles()
     }
 
     fun endTurn() {
@@ -320,7 +318,7 @@ class CivilizationInfo {
     }
 
     fun startTurn(){
-        getViewableTiles() // adds explored tiles so that the units will be able to perform automated actions better
+        updateViewableTiles() // adds explored tiles so that the units will be able to perform automated actions better
         setCitiesConnectedToCapitalTransients()
         for (city in cities)
             city.cityStats.update()
diff --git a/core/src/com/unciv/logic/map/MapUnit.kt b/core/src/com/unciv/logic/map/MapUnit.kt
index 5480ae9377..50045cc805 100644
--- a/core/src/com/unciv/logic/map/MapUnit.kt
+++ b/core/src/com/unciv/logic/map/MapUnit.kt
@@ -314,6 +314,7 @@ class MapUnit {
         currentTile = tile
         if(tile.improvement=="Ancient ruins" && !civInfo.isBarbarianCivilization())
             getAncientRuinBonus()
+        civInfo.updateViewableTiles()
     }
 
     private fun getAncientRuinBonus() {
diff --git a/core/src/com/unciv/logic/map/TileInfo.kt b/core/src/com/unciv/logic/map/TileInfo.kt
index 803a65037c..92e687733e 100644
--- a/core/src/com/unciv/logic/map/TileInfo.kt
+++ b/core/src/com/unciv/logic/map/TileInfo.kt
@@ -200,7 +200,7 @@ open class TileInfo {
 
     override fun toString(): String {
         val SB = StringBuilder()
-        val isViewableToPlayer = UnCivGame.Current.gameInfo.getPlayerCivilization().getViewableTiles().contains(this)
+        val isViewableToPlayer = UnCivGame.Current.gameInfo.getPlayerCivilization().viewableTiles.contains(this)
                 || UnCivGame.Current.viewEntireMapForDebug
 
         if (isCityCenter()) {
diff --git a/core/src/com/unciv/logic/map/TileMap.kt b/core/src/com/unciv/logic/map/TileMap.kt
index 425c9f83e4..cb2d9959c8 100644
--- a/core/src/com/unciv/logic/map/TileMap.kt
+++ b/core/src/com/unciv/logic/map/TileMap.kt
@@ -117,6 +117,11 @@ class TileMap {
             tileInfo.tileMap = this
             if(tileInfo.militaryUnit!=null) tileInfo.militaryUnit!!.currentTile = tileInfo
             if(tileInfo.civilianUnit!=null) tileInfo.civilianUnit!!.currentTile = tileInfo
+
+            for (unit in tileInfo.getUnits()) {
+                unit.assignOwner(gameInfo.civilizations.first { it.civName == unit.owner })
+                unit.setTransients()
+            }
         }
     }
 
diff --git a/core/src/com/unciv/logic/map/UnitPromotions.kt b/core/src/com/unciv/logic/map/UnitPromotions.kt
index 6d4dafa424..9398f0d43c 100644
--- a/core/src/com/unciv/logic/map/UnitPromotions.kt
+++ b/core/src/com/unciv/logic/map/UnitPromotions.kt
@@ -20,6 +20,7 @@ class UnitPromotions{
         promotions.add(promotionName)
         numberOfPromotions++
         unit.updateUniques()
+        unit.civInfo.updateViewableTiles() // some promotions give the unit bonus sight
     }
 
     fun getAvailablePromotions(): List<Promotion> {
diff --git a/core/src/com/unciv/ui/tilegroups/TileGroup.kt b/core/src/com/unciv/ui/tilegroups/TileGroup.kt
index d383ad2174..69b0b3a65d 100644
--- a/core/src/com/unciv/ui/tilegroups/TileGroup.kt
+++ b/core/src/com/unciv/ui/tilegroups/TileGroup.kt
@@ -331,17 +331,19 @@ open class TileGroup(var tileInfo: TileInfo) : Group() {
         return newImage
     }
 
+    fun getBackgroundImageForUnit(unit: MapUnit):Image{
+        return when {
+            unit.isEmbarked() -> ImageGetter.getImage("OtherIcons/Banner")
+            unit.isFortified() -> ImageGetter.getImage("OtherIcons/Shield.png")
+            else -> ImageGetter.getImage("OtherIcons/Circle.png")
+        }
+    }
 
     fun getUnitImage(unit: MapUnit, size: Float): Group {
         val unitBaseImage = ImageGetter.getUnitIcon(unit.name, unit.civInfo.getNation().getSecondaryColor())
                 .apply { setSize(size*0.75f, size*0.75f) }
 
-        val background =
-                when {
-                    unit.isEmbarked() -> ImageGetter.getImage("OtherIcons/Banner")
-                    unit.isFortified() -> ImageGetter.getImage("OtherIcons/Shield.png")
-                    else -> ImageGetter.getImage("OtherIcons/Circle.png")
-                }
+        val background = getBackgroundImageForUnit(unit)
         background.apply {
             this.color = unit.civInfo.getNation().getColor()
             setSize(size, size)
diff --git a/core/src/com/unciv/ui/tilegroups/WorldTileGroup.kt b/core/src/com/unciv/ui/tilegroups/WorldTileGroup.kt
index 9b7878d992..cfe0af646e 100644
--- a/core/src/com/unciv/ui/tilegroups/WorldTileGroup.kt
+++ b/core/src/com/unciv/ui/tilegroups/WorldTileGroup.kt
@@ -5,7 +5,6 @@ import com.unciv.logic.city.CityInfo
 import com.unciv.logic.map.MapUnit
 import com.unciv.logic.map.TileInfo
 import com.unciv.ui.utils.CameraStageBaseScreen
-import com.unciv.ui.utils.ImageGetter
 import com.unciv.ui.utils.center
 
 
@@ -13,8 +12,7 @@ class WorldTileGroup(tileInfo: TileInfo) : TileGroup(tileInfo) {
     var cityButton: CityButton? = null
 
     fun addWhiteHaloAroundUnit(unit: MapUnit) {
-        val whiteHalo = if(unit.isFortified())  ImageGetter.getImage("OtherIcons/Shield.png")
-        else ImageGetter.getImage("OtherIcons/Circle.png")
+        val whiteHalo = getBackgroundImageForUnit(unit)
         whiteHalo.setSize(30f,30f)
         val unitImage = if(unit.type.isCivilian()) civilianUnitImage
                         else militaryUnitImage
diff --git a/core/src/com/unciv/ui/worldscreen/TileMapHolder.kt b/core/src/com/unciv/ui/worldscreen/TileMapHolder.kt
index 6d7190894d..c2297708d5 100644
--- a/core/src/com/unciv/ui/worldscreen/TileMapHolder.kt
+++ b/core/src/com/unciv/ui/worldscreen/TileMapHolder.kt
@@ -145,7 +145,7 @@ class TileMapHolder(internal val worldScreen: WorldScreen, internal val tileMap:
     }
 
     internal fun updateTiles(civInfo: CivilizationInfo) {
-        val playerViewableTilePositions = civInfo.getViewableTiles().map { it.position }.toHashSet()
+        val playerViewableTilePositions = civInfo.viewableTiles.map { it.position }.toHashSet()
 
         cityButtonOverlays.forEach{it.remove()}
         cityButtonOverlays.clear()
diff --git a/core/src/com/unciv/ui/worldscreen/WorldScreen.kt b/core/src/com/unciv/ui/worldscreen/WorldScreen.kt
index 53802772d8..076d4e0a1a 100644
--- a/core/src/com/unciv/ui/worldscreen/WorldScreen.kt
+++ b/core/src/com/unciv/ui/worldscreen/WorldScreen.kt
@@ -265,7 +265,7 @@ class WorldScreen : CameraStageBaseScreen() {
             val shownTutorials = UnCivGame.Current.settings.tutorialsShown
             displayTutorials("NextTurn")
             if("BarbarianEncountered" !in shownTutorials
-                    && civInfo.getViewableTiles().any { it.getUnits().any { unit -> unit.civInfo.isBarbarianCivilization() } })
+                    && civInfo.viewableTiles.any { it.getUnits().any { unit -> unit.civInfo.isBarbarianCivilization() } })
                 displayTutorials("BarbarianEncountered")
             if(civInfo.cities.size > 2) displayTutorials("SecondCity")
             if(civInfo.happiness<0) displayTutorials("Unhappiness")
diff --git a/core/src/com/unciv/ui/worldscreen/WorldScreenTopBar.kt b/core/src/com/unciv/ui/worldscreen/WorldScreenTopBar.kt
index 3157623918..9cc336dcd8 100644
--- a/core/src/com/unciv/ui/worldscreen/WorldScreenTopBar.kt
+++ b/core/src/com/unciv/ui/worldscreen/WorldScreenTopBar.kt
@@ -127,7 +127,7 @@ class WorldScreenTopBar(val screen: WorldScreen) : Table() {
             else -> 2020+(turns-440)/2
         }
 
-        turnsLabel.setText("Turn".tr()+" " + civInfo.gameInfo.turns + " | "+ abs(year)+(if (year<0) " BE" else " AD"))
+        turnsLabel.setText("Turn".tr()+" " + civInfo.gameInfo.turns + " | "+ abs(year)+(if (year<0) " BC" else " AD"))
 
         val nextTurnStats = civInfo.getStatsForNextTurn()
         val goldPerTurn = "(" + (if (nextTurnStats.gold > 0) "+" else "") + Math.round(nextTurnStats.gold) + ")"