The fastest ever built building

Chinese company "Broad group" has managed in just 15 days to build a hotel of 30 floors and area 15000 square meters (183,000 square foot). Building was erected near the Dongting lake, in China’s Hunan Province, from prefabricated modules mounted on a steel structure, with diagonal steel bracing.

The hotel, which were built by Chinese builders in just 360 hours, it is a kind of enterprise engineering and breakthrough in prefabrication - modular construction.

The building has earthquake resistance five times greater than conventional buildings, and heat index at the level of "LEED platinum" building.

The building was built in the last two weeks of 2011, and finished before Eve 2012.

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Clockwise staircases

Spiral staircases in medieval castles are running clockwise. This is because all knights used to be
right-handed. When the intruding army would climb the stairs they would not be able to use their right hand which was holding the sword because of the difficulties of climbing the stairs. Left-handed knights would have had no troubles, except left-handed people could never become knights because it was assumed that they were descendants of the devil.

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Roman Coliseum facts

At the time of its construction, the Colosseum had the capacity of seating around 50,000 spectators.


Initially, the amphitheater was used for holding gladiatorial contests and public spectacles, such as mock sea battles, animal hunts, executions, re-enactments of famous battles and dramas based on Classical mythology.

Roman Coliseum remained in use for nearly 500 years. The last recorded games were held in it in the 6th century.

It was in the medieval era that the amphitheater ceased to be used for entertainment purposes. Thereafter, it was used for housing, workshops, quarters for a religious order, a fortress, a quarry, and a Christian shrine.

The games played in the Colosseum are believed to have taken the lives of about 500,000 people and over a million wild animals.

Though ruined by earthquakes and stone-robbers, the amphitheater serves as an iconic symbol of Imperial Rome.

Roman Coliseum is one of the most popular tourist attractions of Rome and still holds close connections with the Roman Catholic Church.

On every Good Friday, the Pope leads a torchlit "Way of the Cross" procession to the amphitheatre.

The amphitheater has been depicted on the Italian version of the five-cent euro coin.

The Colosseum is an entirely free-standing structure, 189 m (615 ft) long, 156 m (510 ft) wide and with a base area of 6 acres (24,000 m2).

The height of the outer wall of the amphitheater is 48 m (157 ft), with the perimeter originally measuring 545 m (1,788 ft).

The central arena of Roman Coliseum is oval in shape, being 287 ft long and 180 ft wide. It stands surrounded by a 15 ft high wall, which has tiers of seating above it.

It has been estimated that the outer wall of the amphitheater required over 100,000 cubic meters (131,000 cu yd) of travertine stone.

The stones used in the outer wall of the Colosseum were set without mortar. In fact, they were held together by 300 tons of iron clamps.

The arena of the amphitheater is estimated to have the dimensions of 83 m by 48 m (272 ft by 157 ft).

The surviving facade of Roman Coliseum's outer wall is made up of three stories of superimposed arcades, framed by half-columns of the Doric, Ionic, and Corinthian orders.

The arcades of the amphitheater have been surmounted by a podium on which stands a tall attic, decorated with Corinthian pilasters.

There were special boxes in the Colosseum, at north and south ends, for the Emperor and the Vestal Virgins, providing the best views of the arena.

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Largest building in the world

Today, the largest building in the world is Burj (tower) Dubai, 824 meters high (2500 ft). This is an engineering triumph in every aspect, but the Chinese have announced that they will soon make even bigger building.
That is why the Great Pyramid of Giza is the largest buildings ever made.It was bult in 2551 BC and was a high 160 meters (500 ft), but due to erosion is high now 138 meters (455 ft).In it is embedded 2.3 million stone blocks, and each is weight 2.5 tons. It is perfectly aligned to the sides of the world, northern slot correctly shows the North Star and the southern slot central star in the Orion belt.What is even more mysterious, that ancient Egyptians accomplish this before the wheel was invented.Many people believe that they were made gods or aliens.This pyramid is one of the seven world wonders. It was the largest building in the world more than 3800 years, while the Eiffel Tower was built in Paris. Even today this is one of the largest buildings in Africa and the world.

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Longest tunnel in the world

Gotthard railway tunnel in Switzerland is the longest tunnel in the world. The tunnel is still under construction and will be released in use in 2016, and will be 57 kilometers (35 miles) long. Swiss say that this will be the safest tunnel in the world, with new systems for ventilation and rescue of people captured in a deep tunnel. This tunnel connects the northern Switzerland and Ticino area, right through the Alps.

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Most famous religious site

The arrangement of stones at Stonehenge, Neolithic likely the most famous religious site, on the Salisbury Plain in southern England, results from several phases of construction that occurred between 2.500 BC to around 2.000 B.C. The stones used in its construction came from two places. The Bluestone, Which form the inner, earliest, semicircle, came from the Preseli Mountains around 385 kilometers (616 miles) away. The larger sarsens, weighing up to 45 tonnes, were brought to Stonehenge from the Marlborough Downs, 30 kilometers (48 miles) to the north.

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Houses of rice skin

Japanese farmers, after removing the Hulls from their rice crop and sorting out the white kernels, take the Hulls from the leftover rice, mix them into a kind of paste, mold the substance into brick-shaped blocks, and build houses with them. Such buildings are known in Japan as "houses of rice skin"

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Bridge of Eggs

A bridge built in Lima, Peru around 1610 was made of Mortar that was mixed not with water but with the whites of eggs 10.000. The bridge, appropriately called the Bridge of Eggs, is still standing today.

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