Near Rome, there is a living house, one of the most eccentric pieces of 20th-century Italian architecture: you can now visit it (opens in new tab)

On the Lazio coast, the "Casa Albero" (Tree House) is the realized utopia of Giuseppe Perugini, Uga De Plaisant, and Raynaldo Perugini: a building designed to grow, branch out, and change, now open to the public during select times.