Carcassonne

A tile-laying game where players create the countryside around the medieval walled city of Carcassonne. Points are scored by playing pawns known as meeples on the tiles.

Links:

Official Site

http://www.riograndegames.com/games.html?id=48

Wikipedia

http://en.wikipedia.org/wiki/Carcassonne_(board_game)

Boardgamegeek.com

http://www.boardgamegeek.com/game/822