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The Great Pyramid of Giza, built over 4,500 years ago, stands 481 feet tall and weighs nearly six million tons, consisting of 2.3 million stone blocks.
The Great Pyramid of Giza, built with 2.3 million stone blocks, weighs nearly six million tons and was the tallest building on Earth for 3,800 years.
A budget of 25 million Euros is allocated for the restoration and preservation of the Colosseum's facade and interior.
Restoration of the Colosseum requires a budget of 25 million euros to preserve its facade and create a welcome center for visitors.
277 miles long and more than a mile deep, the Grand Canyon is so vast that it can be seen from space.
17,000 known caves exist in the Tennessee, Alabama, and Georgia area, making it the highest concentration of caves in the United States.
A typical Venetian building is supported by a brick wall in the mud, with facades on the canal side built on long thin poles to prevent rising damp.
Colossal stones weighing six tons were cut to block the passageways of Han dynasty tombs, designed to protect valuable relics from tomb raiders.
Teams face freezing waters and mild hypothermia as they race through a two-kilometer limestone cave system in Tasmania's wilderness.
