Housed in a subterranean fallout shelter in Switzerland, the Null Stern Hotel bills itself as the world's first zero-star hotel. Accommodations are cheap but spartan: No TV, no private bathrooms and, most jarring of all, no daylight. The official opening isn't until 2009, but the hotel recently hosted volunteers for a test run.

Okay, But Only Because You're the Last Man on Earth

Swatches, impenetrable bank accounts, instant cocoa—the Swiss have made many indispensable contributions to global culture. But the Null Stern (Zero Star) Hotel, fashioned from a nuclear bunker beneath the small town of Sevelen, about 70 miles southwest of Zürich, is unlikely to inspire copycats. Still, the notion of a hot night in a former atomic-blast-proof facility will certainly appeal to those into (extremely) safe sex. Brothers and artists Frank and Patrik Riklin have converted a seldom used fallout shelter and old concrete-walled factory into a high-concept lodging, with screens in lieu of a view (live footage from outside is projected onto the walls to create mock windows). While you and your partner survey the modest but certainly novel accommodations (a bargain at about $9 a night), you can imagine that civilization has been destroyed and it's up to you to repopulate the planet (come on, like you haven't used that line before). After opening for a trial period, during which it saw only a dozen guests, the Zero Star is scheduled to open more widely soon. Check the town's website for updates.