Castellfollit de la Roca, Spain
Catalonia’s Castellfollit de la Roca sits on a cliff formed when two lava flows stacked on top of one another, towering over the confluence of two rivers below. The town, which is over a millennium old, stretches for almost a full kilometer and is home to fewer than a thousand people. In the event that you absolutely must traverse this neighborhood, there is a teeny, tiny street that winds its way around the perimeter of the houses. Imagine, for a moment, that your backyard is a precipice.
Chemosphere, Los Angeles
The Chemosphere is a 2,200-square-foot, one-story octagonal house in Los Angeles that sits atop a 30-foot-tall, 5-foot-wide concrete column. It was once called “the most modern home built in the world,” and it was designed by John Lautner in 1960. Considering that the house was built on a 45-degree incline, the ingenuity of its design is being singled out for special praise.