There are world records out there for the strangest things, and the "buildings" category is no exception. How much do you know about the world's structures?
The Burj is 2,717 feet (828 meters) tall -- that's 163 floors.
Hundreds of children helped build the 114-foot (35-meter) Lego building in Hungary.
Nope, it's not on a mountain somewhere, as one might think. The highest library in the world is on the 60th floor of the JW Marriott Hotel in Shanghai. It's 757.5 feet (230.9 meters) above sea level.
The Grand Mosque is 328 feet (100 meters) long and 131 feet (40 meters) wide.
The building is a whopping 10.7 million square feet (1 million square meters) -- almost 186 football fields. We can't even begin to imagine how many flowers that means.
The Lake Pontchartrain bridge -- which connects the towns of Mandeville and Metairie -- is 23.87 miles (38.41 kilometers) long.
The postbox is 33 feet (10 meters) underwater. Divers can leave water-resistant postcards there which are collected and delivered every few days.
The palace features 3.5 million cubic feet (1 million cubic meters) of marble plus 1.5 billion pounds (700,000 metric tons) of steel and bronze, 7.7 million pounds (3,500 metric tons) of crystal glass and 31.7 cubic feet (900,000 cubic meters) of wood. We have absolutely no idea what that adds up to.
The Fu Gang building weighs 33.3 million pounds (15,140.4 metric tons) and is 111 feet (34 meters) tall.
The Imperial Palace covers 3,150 feet by 2,460 feet (960 by 750 meters) over 178 acres. Most of it was built in the 18th century.