Just in time to commemorate the 50 years of the death of Frank Lloyd Wright, LEGO released two of his master pieces on their architecture series: the Guggenheim Museum (who opened 50 years ago) and the Falling Water House.
These sets were designed with Adam Reed Tucker of Brickstructures, Inc, who also did the Landmark series for LEGO Architecture (Sears Tower, John Hancock Tower, Empire State, Seattle Space Needle).
You can order them at the online store for US$45 (+ shipping).
Seen at The Coolist (thanks Mike!)