World's craziest homes

Biggest treehouse in the world, Tennessee
From a house made entirely of legos to a home carved out of a cave, take a look at some of the world's craziest homes ... The world's largest treehouse, located in Crossville Tennessee, stands 97 feet tall and is based on 6 trees. The structure took builder Horace Burgess 11 years to build. Burgess, who now lives in the 10-story wooden house, says he began building it in 1993 after he received the go-ahead from God.

Toilet-shaped house, Korea
Oh poo! This toilet-shaped house is named Haewoojae, which means "a place of sanctuary where one can solve one's worries." It was designed by the chairman of the organizing committee of the Inaugural General Assembly of the World Toilet Association, who hopes that it will bring attention to the world's sanitation problems, according to Freshome.com. It is located in Suweon, which is south of Seoul, Korea.

Rock house, Portugal
This home gives the phrase "have you been living under a rock?" a whole new meaning. The house, built into a gigantic boulder, sits near the coast of Portugal.

Lego house, England
British TV personality James May loves Legos so much so that he built an entire house from them -- and promised to live in it. The two-story house in Dorking, U.K. was constructed using more than 3 million Legos and has a working Lego toilet and Lego furniture. More than 1,200 people worked to construct May's very own Legoland.

Forest Spiral, Germany
The "Waldspirale" (Forest Spiral) in Darmstadt, Germany was the final architectural masterpiece designed by Austrian artist Friedensreich Hundertwasser before he passed away. It's an apartment complex with 105 units, an interior courtyard with a stream, and has a restaurant and a cocktail bar near the top of the tower. The roof was planted with grass and shrubs.

Cave home, Missouri
This three-story home, the residence of Curt and Deborah Sleeper, was built inside a cave. It is located in Festus, Missouri.

Hurricane-proof home, Florida
The Dome Home in Pensacola Beach, Florida, constructed to withstand hurricane force winds, has proved its worth! While most of the homes around it were destroyed or heavily damaged during a storm, the Dome Home was basically unharmed.

Ice House, Detroit
Brrrr ... This crazy-looking home will make you feel a little, er, cold. Two Detroit artists encased this home in ice in an effort to draw attention to the housing crisis that has ransacked America. They call the project "Ice House Detroit."

Great White Shark home, England and Waterfall home, Pennsylvania
Some homeowners are just drawn to the sea! While one homeowner had a Great White shark figurine plunge through the roof of his home on a suburban street in Oxfordshire, England (l.), another built a house over a waterfall in Mill Run, PA. (r.). Architect Frank Lloyd Wright designed the Fallingwater house, which was completed in 1939, as a weekend cottage for Pittsburgh department store owner Edgar J. Kaufmann.

Car house, Salzburg
This residential car house in Salzburg, Germany was designed by architect Markus Voglreiter, who invested about one million euros for the exceptional building constructed in the shape of a Volkswagen-Beetle-car. The home has a monthly rent of 2,500 euros.

Upside down house, Germany
"The World Stands on its Head" ("Die Welt Steht Kopf") House on the Baltic Sea Island of Usedom stands nearly completed on September 3, 2008 in Trassenheide, Germany. The upside down house has upside down interior furnishings and is the brainchild of Klaudiusz Golos and Sebastian Mikiciuk. Inside, workers attached a dish with squash to the upside down dining room table.

Bus house, Honduras
Here is a house built out of petrol drums and an old passenger bus in El Progreso, Honduras.

Bedroom opens into pool, Auckland
Want to jump from your bed right into a refreshing swimming pool? Looks like one homeowner in Auckland, New Zealand did.

Steepest block in the world, U.K. and Skinniest house, New York City
These homes look normal, right? Well, they're not. The residences near Chalford, England (l.) are built in such a steep area that residents are unable drive their cars up the narrow paths to the doors of their homes. Instead, they use donkeys to help carry heavy bags 100 metres up the steep slopes. On the other hand, though New York City is known for its cramped living quarters, this 9 1/2 by 42 foot-long brick home (r.) takes the cake for skinniest house in Manhattan. It’s price tag, however, is anything but slim. It reportedly sold for $2.1 million.

Ennis-Brown House, California
The Ennis-Brown House, designed by architect Frank Lloyd Wright in 1924, is located in Los Angeles, California. The historic 10,000 square foot home was yellow tagged (limited occupancy allowed) by the City of Los Angeles after a retaining wall began to fall after rain storms in Southern California.

Carlsberg beer house, Netherlands
Bottoms up! Men work on building a house with crates of Carlsberg beer in the Netherlands.

Porcelain House, China
Here is a photo of the facade of the "Porcelain House," built by Chinese collector Zhang Lianzhi, on November 1, 2008 in the Heping district of Tianjin, China. Over 400 million porcelain fragments, 5,000 ancient vases, 4,000 antique china dishes and bowls, over 20 tons of crystalline rocks and agate and 400 white marble stone carvings were incorporated in the five year refurbishment of the unique French styled house. Valued at over $65 million, "Yuebao House" is open to the public as a museum, displaying wares of china, wood, lacquer and bronze collected by the owner over the past two decades.

UFO house, Florida
While at first glance this house looks to be a UFO, it's actually the earthly product of a Finnish architect. Called the Futuro House, it was designed in the late 1960s by Matti Suuronen and was light enough to be moved by helicopter, according to the New York Times.

Summer home, New York
Joyce and Irwin Hunt and their child relax on the porch of their Andrew Geller-designed summer home on Fire Island, New York.

Strangely designed home, Morocco and Uber-modern home, Maryland
Talk about unusual! One strangely designed home in Morocco has a glass windowed room in a 1970s style of architecture (l.). Another peculiar private house in Maryland (r.) has an uber-modern structure made from brushed silver steel.