Forget about skyscrapers - the most beautiful buildings in the world are under the ground

• Forget about skyscrapers - the most beautiful buildings in the world are underground

The United Nations Organization estimates by 2300 the world population will increase fivefold.

This means that the city will be overcrowded. More than half of humanity now lives in cities, and by 2050, at least two thirds of the population will call the city their home.

Almost all major cities of the demand for housing outstrips the opportunity they provide. Nevertheless, the growing population of somewhere will need to live.

One possible solution - the construction of underground or embed buildings in the existing landscape, be it a hill or cliff. Many cities already have underground areas, but as urban sprawl, it can be expected that these areas preumnozhatsya.

Take a look at some of the unique wonders of the world, which are built under the ground or in rocks.

In the luxury hotel in Imerovigli Santorini (Greece) has a swimming pool, built in a cave. On a cliff overlooking the Mediterranean Sea.

The stone caves stretch along the cliffs in Nevsehir, Turkey, in the historical region of Cappadocia. This place is popular with tourists who come to look at the creations of Byzantine art and an extensive network of underground caves in the Bronze Age dwelling.

For a more modern residential caves include Les Hautes Roches - a five-star hotel, carved in limestone rock. From luxuriously appointed rooms have a view of the Loire River.

This amusement park at a depth of 400 feet was built in a former salt mine in Romania, it is called Salina Turda. Inside, you can ride on the Ferris wheel or underground on a rowing boat on the lake, play ping-pong, and watch performances in the amphitheater.

Carved into the rock church in Helsinki Temppeliaukio charms glazed dome, which is located just above ground level and allows plenty of sunlight inside. Builders specifically left intact the stone walls: amazing natural acoustics of the church makes an ideal venue for concerts.

In this village in the south of Tunisia, the locals live in traditional dwellings trogloditnyh - caves cut into the rock. There is even an underground hotel.

The house on the Greek island of Antiparos is located right on the spot where the two hills converge. Two long stone walls joined them like a bridge, so the house is naturally blended into the landscape.

Built in 2009 in memory of one Korean poet earthen house in Seoul, has two courtyards, which comprises six separate rooms, a kitchen, an office and a bathroom with a wooden bathtub and toilet.

This house is in Glaumbær, Iceland, is an example of "home turf" - the building retains heat well and has a stone foundation, and on the sides - packed layers of turf.

Poland 800 steps down the stairs will lead you to a place where you will find an art gallery, a holiday home and a huge hall, which hosts weddings and conferences. This miracle of the 13th century, was once a salt mine.

Built in 1996 and similar to the hobbit house, this house in the Welsh countryside is a tunnel under the roof of turf. House with three rooms and stunning views of the ocean resembles the home of the famous British TV show for children - the locals call it "home Teletubbies".

This "buried" the museum is located on Naoshima, Japan "the island of the arts." Small holes in the concrete and geometric windows, hatches, which reflect light, can be considered among the green cover.

Residents of Coober Pedy in Australia pray underground. The Serbian Orthodox Church, built in 1993, is carved in sandstone and has a common room, a parish house, and even a school.

Built by the architect Peter Vetch, this Swiss house - a sample of "earthen dwellings" - sort of a house in the land, wherein the wall is partially used local natural terrain.