The Spiral House-Ramat Gan, Israel
Designed by architect Zvi Hecker. The construction started in 1984 and ended in 1990. The building is designed as an extension of a spiral staircase. Sitting on a hillside, it features roof-free porches.
The building is made of concrete, with a facade of plaster, pink glass and stone fragments and corrugated tin.
Shmuel Grobstein, who played a part in the Spiral's design, once described it thus: "It looks like a storm passed through Ramat Gan, picking up all the wrecks from the roofs and yards, and created the spiral in one swoop."