The construction of the Hoover Dam used an amount of concrete equal to that of paving a four feet wide path all the way around the equator.
Originally a palace, the Louvre was made into a museum after the French Revolution.
Created to honour King Zoser - the first ruler of the Third Dynasty - the central edifice of the 4600-year-old mastaba (a tomb for kings) at Sakkara, Egypt, is the oldest man-made building of any kind still in existence.
The largest ground area of any office building in the world is the Pentagon, Washington D.C.
Construction of St. Peter's Basilica, Rome - which began in 1506 - took over a century, reaching completion in 1612.
The 10-storey Home Insurance office - built in Chicago in 1885 - was the world's first skyscraper.
Bricks are the oldest manufactured building material still in use. Egyptians first used them 7000 years ago.
The Washington Monument was the tallest building in the world at 555 feet until the 984 foot Eiffel Tower was built in 1889.
Despite building work starting on August 9, 1173, the 10-storey Leaning Tower of Pisa wasn't completed until some time in 1370 after two building stoppages. Work stopped when it was three stories high, then again at seven.