This is a PS to the earlier Living with boulders post. Thanks to David W. for telling me about this town. It’s the Spanish town of Setenil, or Setenil de las Bodegas, and many of its original houses are built into natural caves under a rock overhang. The caves were carved out of volcanic tufa rock by the Rio Trejo and have been occupied since prehistoric times, but the facades were added later. Cool in summer, warm in winter, and once upon a time easily defended against centuries of attack. In Spanish the name for this sort of housing is “abrigo bajo rocas”, literally “shelter under rocks.” More here. Photos by maesejose, Carl Galloway and El Pantera.

Selgas Cano is a Spanish architecture firm, and this long glass tube in a little wooded ravine is the Madrid office they’ve built for themselves. The shutters over the clear roof are retractable (see the photo of the pulleys at bottom). The building seems to have inspired some wildly varying reactions from those who either find it beautiful and inspiring or who feel it’s a cramped, claustrophobic, unventilated bunker or train car – see the archdaily link to see what I mean. The superb photos are by architectural photographer Iwan Baan. Via archdaily via kenmat and maxchad. PS Both fans and detractors of this space may want to read a recent Scientific American article on the neuroscience of how room design affects work, creativity and mood. Two relevant points are that low ceilings facilitate detail work while high ceilings facilitate abstraction; and that views of nature improve creativity, focus and memory. This space offers all of those advantages – natural views, as well as ceilings that are both low and high, depending on the retraction of the roof and on which part of the room you’re in.