These houses, which can be plopped down nearly anywhere—on roofs, in deserts, on riverbanks—offer stylish alternatives to mobile homes for the contemporary nomad. Some can be built up in the course of a day, then broken down again, like giant Legos. And, as we all know by now, such homes are far more eco-friendly than resource-guzzling McMansions.
A prefab, vertical gym in the slums of Caracas has the dimensions of a basketball court, and it has already proven its worthiness: after it opened in 2004, crime in the surrounding neighborhood dropped 30%. The gym is programmed 24/7, with everything from dance therapy classes to chess tournaments.