6. The Blue Sky Mausoleum in Buffalo

Located in Forest Lawn Cemetery in Buffalo, New York, the Blue Sky Mausoleum was designed by Frank Lloyd Wright at the request of Darwin D. Martin, the secretary of the Larkin Soap Company. Although the design was conceived for the cemetery in 1928, the structure itself was never built due to a lack of funds. After Wright’s passing, the Forest Lawn Cemetery and Wright’s one-time apprentice, Anthony Puttnam, came together in 2004 to resurrect the project based on research into Wright’s drawings and correspondence.

The structure includes 24-crypts, which are built into a hill. According to the Wall Street Journal, the asking price for each ranges from $75,000 to $500,000.