Villa Bio is situated a little over an hour outside of Barcelona in Llers, a green, hilly, sun-bathed sprawl near Figueres (hometown of everyone’s favorite mustachioed surrealist, Salvador Dali). The hydroponic rooftop garden grows out of volcanic stones. The home is conceived as a giant C-shaped spiral.  Photo 3 of 11 in 10 Modern Rooftops For Summer Relaxing and Entertaining from A Bunker-Like Home With a Green Roof Brings the Best of Avant-Garde Architecture to Catalonia

10 Modern Rooftops For Summer Relaxing and Entertaining

3 of 11

The hydroponic rooftop garden grows out of volcanic stones. The home is conceived as a giant C-shaped spiral.