Looks like Lego is gearing up for a fun architectural line.
The blog at Gadgets.boingboing.net shows Frank Lloyd Wright's Guggenheim Museum and Falling Water.
These could make for some fun teaching tools or office decor. Not fully related, but I still remember a unique demonstration in Intro to Art History I, where the professor built the dome of Hagia Sophia out of a cantaloupe to show how pendentives work.
Anyone with an extra $300 and patience to put together 6,000 pieces could try Lego's Taj Mahal: