Terrain Types
Grassland - +2 Food
Plains - +1 Hammer, +1 Food
Marsh
Forest - units can hide/recover in forests, rough terrain
Jungle - rough terrain
Desert
Snow
Tundra
Hills - Provide defence to units on them, plains: +1 food, +2 hammer, rough terrain
Mountains
Coast - +1 food, +1 commerce
Ocean
Lakes
Rivers - Affects defence/attack bonus when attacking across it, +1 Gold to surrounding tiles
Natural Wonders
Old Faithful in Yellowstone National Park, Wyoming, USA
The Great Barrier Reef in Queensland, Australia - As it expands across two tiles it gives a bigger bonus than usual
Luxury Resources
Ivory (Elephants)
Dye
Spices
Silk
Gold
Whales
Fur
One Luxury Resources is enough for your entire Empire (IGN)
Strategic Resources
Iron
Horses +2 hammer, +1 commerce
One strategic resources will only allow you to build a limited supply of units that require that resource i.e. one Iron will allow about 5 units bases on Iron IGN
Other Resources
Cattle
Deer
Wheat
Cotton
Bananas +2 food, +1 commerce
Map Improvements/Features
Farms - Can be built on Hills
Pastures - Used to get access to Horses, Cattle
Camps - Used to accesses Ivory, Deer and Fur
Roads - Now cost maintenance each turn
Forts
Plantation - Used to get access to Bananas
Trading Post - Increased gold output of map titles
Ancient Ruins
Ancient Ruins (Goody Huts) will be making a return to Civ , some of the things you can find in them incude:
Ancient treasure which provides gold to your civilization.
A map of the surrounding area.
Weapons upgrades. The unit which enters the tile is upgraded to a more advanced unit (a warrior might become a spearman, for example)
Survivors from the earlier civilization. They move to one of your cities, increasing its population by one.
A one-time boost to your culture.
On the easier difficulty levels, ruins can also provide you with free settlers and workers - 2k Greg
