Unlocks the Builder ability to construct a Coastal Polder, unique to Netherlands.

+1 Food, +1 Production and +0.5 Housing. +1 Food for every 2 adjacent Coastal Polder or Floodplain Polder tiles. Additional Food and Production as you advance through the Civics and Technology Tree. Must be placed on a Lake or Coast tile adjacent to passable land tile.Can be built on Reef. Increases Movement Cost by 1.

+1 Food from every 2 adjacent Floodplain Polder tiles, becomse obsolete with Feudalism.
+1 Food from each adjacent Floodplain Polder tile, requires Feudalism.
+1 Production from every 2 adjacent Floodplain Polder tiles, requires Shipbuilding, becomse obsolete with Mass Production.
+1 Production from each adjacent Floodplain Polder tile, requires Mass Production.
+1 Food from every 2 adjacent Coastal Polder tiles, becomse obsolete with Feudalism.
+1 Food from each adjacent Coastal Polder tile, requires Feudalism.
+1 Production from every 2 adjacent Coastal Polder tiles, requires Shipbuilding, becomse obsolete with Mass Production.
+1 Production from each adjacent Coastal Polder tile, requires Mass Production.