Imagine it's 1950, your dad is Frank Lloyd Wright and you ask him to design a house for you and your wife. Since you live in Arizona, father Frank designs an elevated house with a crazy spiral shape in order to capture cooling winds; years later he'll borrow from the form factor to create the Guggenheim.

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The guest house.

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Completed in 1952, the David & Gladys Wright House--which FLW originally and somewhat pretentiously named "How to Live in the Southwest"--is a 2,500-square-foot concrete edifice whose circular shape and spiral ramp antedated the Guggenheim by some seven years. 

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"[I]t is a good type of house for that [Southwest] region and affords many advantages not possible to a house on the ground," Wright wrote of the house. "It is a citrus orchard district and the orange trees make the yard for the house. The slowly rising ramp reveals the surrounding mountains and gives security to the occupants."

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There's also a 360-square-foot guest house of a more simple, rectilinear design.

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Whether you love the design or hate it, something about it apparently promotes longevity: David Wright lived in the house until his death in 1997 at the age of 102, and Gladys lived there until she died at 104.

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Last year the Frank Lloyd Wright Foundation announced that the home had been donated to benefit the School of Architecture at Taliesin; however, there's apparently been some behind-the-scened drama, as this year the house has inexplicably been placed on the market for $13 million. If you've got the money, here's your chance to live into your early 100s.