As a young child (or perhaps even an adult) who hasn’t dreamed of living tree houses? Some structures are built on trees or hung from trees, but some unusual tree house building designs are even grown from trees or built right into a tree. Some people live in trees as a luxury, some to help save the environment and others out of tradition or necessity. Here are ten incredible tree house designs that range from functional to fanciful, sustainable to strange and affordable to incredibly expensive.

 This is the most expensive house, Toronto, Canada.
Its price - $ 270 million.
The house has a tennis court, indoor pool, bowling, cinema and many other essential items, including a bedroom area of 370 square meters.

Everyone needs a personal sanctuary in which to wind down, and this house in suburban Maryland has fostered the sacred on-site in this Tea House by David Jameson Architects
Inspired by the form of a Japanese lantern, the bamboo-embraced Tea House by David Jameson hangs serenely from a steel frame overhead. This glass-and-bronze box serves as the perfect place for a book and hot green tea, a meditation session or a musical recital featuring one of the family’s talented children.