diff --git a/android/assets/jsons/translations/template.properties b/android/assets/jsons/translations/template.properties
index 05289aed8c..f5adadb3b1 100644
--- a/android/assets/jsons/translations/template.properties
+++ b/android/assets/jsons/translations/template.properties
@@ -764,6 +764,7 @@ Stopped population growth =
 In resistance for another [numberOfTurns] turns = 
 Sell for [sellAmount] gold = 
 Are you sure you want to sell this [building]? = 
+Free = 
 [greatPerson] points = 
 Great person points = 
 Current points = 
diff --git a/core/src/com/unciv/logic/automation/NextTurnAutomation.kt b/core/src/com/unciv/logic/automation/NextTurnAutomation.kt
index 39dc1074ae..452cfcdc89 100644
--- a/core/src/com/unciv/logic/automation/NextTurnAutomation.kt
+++ b/core/src/com/unciv/logic/automation/NextTurnAutomation.kt
@@ -325,7 +325,10 @@ object NextTurnAutomation {
                     continue
                 val buildingToSell = civInfo.gameInfo.ruleSet.buildings.values.filter {
                         it.name in city.cityConstructions.builtBuildings
-                        && it.requiresResource(resource) }.randomOrNull()
+                        && it.requiresResource(resource)
+                        && it.isSellable()
+                        && it.name !in civInfo.civConstructions.getFreeBuildings(city.id) }
+                    .randomOrNull()
                 if (buildingToSell != null) {
                     city.sellBuilding(buildingToSell.name)
                     break
diff --git a/core/src/com/unciv/logic/city/CityInfo.kt b/core/src/com/unciv/logic/city/CityInfo.kt
index 58fe2998ab..16db23e9ef 100644
--- a/core/src/com/unciv/logic/city/CityInfo.kt
+++ b/core/src/com/unciv/logic/city/CityInfo.kt
@@ -310,6 +310,9 @@ class CityInfo {
         }
         
         for (building in cityConstructions.getBuiltBuildings()) {
+            // Free buildings cost no resources
+            if (building.name in civInfo.civConstructions.getFreeBuildings(id))
+                continue
             for ((resourceName, amount) in building.getResourceRequirements()) {
                 val resource = getRuleset().tileResources[resourceName]!!
                 cityResources.add(resource, -amount, "Buildings")
diff --git a/core/src/com/unciv/models/ruleset/Building.kt b/core/src/com/unciv/models/ruleset/Building.kt
index e8461b3720..8b772225b5 100644
--- a/core/src/com/unciv/models/ruleset/Building.kt
+++ b/core/src/com/unciv/models/ruleset/Building.kt
@@ -115,13 +115,17 @@ class Building : RulesetStatsObject(), INonPerpetualConstruction {
     fun getDescription(cityInfo: CityInfo?, ruleset: Ruleset): String {
         val stats = getStats(cityInfo)
         val lines = ArrayList<String>()
+        val isFree = if (cityInfo == null) false
+            else (name in cityInfo.civInfo.civConstructions.getFreeBuildings(cityInfo.id))
         if (uniqueTo != null) lines += if (replaces == null) "Unique to [$uniqueTo]"
             else "Unique to [$uniqueTo], replaces [$replaces]"
         if (isWonder) lines += "Wonder"
         if (isNationalWonder) lines += "National Wonder"
-        for ((resource, amount) in getResourceRequirements()) {
-            lines += if (amount == 1) "Consumes 1 [$resource]" // For now, to keep the existing translations
-            else "Consumes [$amount] [$resource]"
+        if (!isFree) {
+            for ((resource, amount) in getResourceRequirements()) {
+                lines += if (amount == 1) "Consumes 1 [$resource]" // For now, to keep the existing translations
+                else "Consumes [$amount] [$resource]"
+            }
         }
         if (uniques.isNotEmpty()) {
             if (replacementTextForUniques != "") lines += replacementTextForUniques
@@ -144,7 +148,7 @@ class Building : RulesetStatsObject(), INonPerpetualConstruction {
 
         if (cityStrength != 0) lines += "{City strength} +$cityStrength"
         if (cityHealth != 0) lines += "{City health} +$cityHealth"
-        if (maintenance != 0) lines += "{Maintenance cost}: $maintenance {Gold}"
+        if (maintenance != 0 && !isFree) lines += "{Maintenance cost}: $maintenance {Gold}"
         return lines.joinToString("\n") { it.tr() }.trim()
     }
 
diff --git a/core/src/com/unciv/ui/cityscreen/CityInfoTable.kt b/core/src/com/unciv/ui/cityscreen/CityInfoTable.kt
index 041051d273..647a6e02dc 100644
--- a/core/src/com/unciv/ui/cityscreen/CityInfoTable.kt
+++ b/core/src/com/unciv/ui/cityscreen/CityInfoTable.kt
@@ -63,11 +63,13 @@ class CityInfoTable(private val cityScreen: CityScreen) : Table(CameraStageBaseS
 
     private fun addBuildingInfo(building: Building, destinationTable: Table) {
         val icon = ImageGetter.getConstructionImage(building.name).surroundWithCircle(30f)
-        val buildingNameAndIconTable = ExpanderTab(building.name, 18, icon, false, 5f) {
+        val isFree = building.name in cityScreen.city.civInfo.civConstructions.getFreeBuildings(cityScreen.city.id)
+        val displayName = if (isFree) "{${building.name}} ({Free})" else building.name
+        val buildingNameAndIconTable = ExpanderTab(displayName, 18, icon, false, 5f) {
             val detailsString = building.getDescription(cityScreen.city, cityScreen.city.getRuleset())
             it.add(detailsString.toLabel().apply { wrap = true })
                 .width(cityScreen.stage.width / 4 - 2 * pad).row() // when you set wrap, then you need to manually set the size of the label
-            if (building.isSellable()) {
+            if (building.isSellable() && !isFree) {
                 val sellAmount = cityScreen.city.getGoldForSellingBuilding(building.name)
                 val sellBuildingButton = "Sell for [$sellAmount] gold".toTextButton()
                 it.add(sellBuildingButton).pad(5f).row()