Are there any good tile-laying games similar to Carcassonne

You should look at Gold Mine (http://stratusgames.com/games/gold-mine). Players build a maze of mine tunnels and collect gold nuggets using mini miner figures. It has 100 game tiles, similar in size to Carcassonne tiles. Tile placement is somewhat similar to Carcassonne, but the pawns have free reign to move around the game board and the mechanic is quite unique.


You also might want to try Tantrix (http://www.tantrix.com/english/TantrixWhatIs.html), which is an abstract strategy game that uses hexagonal tiles.