Fallingwater by Frank Lloyd Wright - a.k.a. the Kaufmann Residence (voted the building in North America for years). The house was built partly over a waterfall on Bear Run in the Mill Run section of Stewart Township, Fayette County, Pennsylvania.
Australian prefab architecture specialists Modscape Concept have designed an exciting five story home that clings to a cliff’s edge. Aptly called Cliff House, the design was created in response to a growing number of clients exploring design options for living on extreme coastal plots in Australia. The modular home was inspired by the shape of barnacles clinging to a hull of a ship, and it extends off the side of a cliff, rather than sitting upon it.