Could a Tree House Solve Your Housing Dilemma?

These days you read more about homes being underwater than up in the air. But with more artists and architects building tree houses, some of today's coolest and most avant-garde homes are nestled in tree branches.

Equipped with amenities including electricity, plumbing, heating -- even Wi-Fi -- big-kid tree houses provide a creative alternative to life on the ground and provide an airy escape from packed streets. Many are made from recycled materials and use eco-friendly systems like solar power and rainwater recycling. And, of course, you can't beat the views.

In celebration of these digs in the sky, here's a look at some of the most amazing tree houses in the world: