I have some friends visiting so I took them to Doylestown, PA for the day. Its a cute little town, with neat shops and some pretty interesting things. One of them is the Moravian Tileworks and Fonthill. There was a man named Henry Mercer who built these with concrete and tiles. These pictures are of the tileworks. Its a functioning pottery where they make tiles today.
Mercer also built a 6 story castle called Fonthill which is a museum and can be toured. It is facinating to see the tiles and mosaics that he made or collected from around the world.