Currently, Asia is Earth's largest continent at approximately 17,300,000 square miles (44,806,812 sq km). Africa comes in second at about 11,700,000 square miles (30,300,000 sq km). However, Continental Drift Theory suggests that the continents have moved over the years through the process of plate tectonics. Many geologists believe that, during the Mesozoic era, all of the continents combined to form a supercontinent known as Pangaea which would have dwarfed the largest continent today. It is believed that Pangaea began to break up about 200 million years ago.

With a toothy coastline of 2,650 miles (4,265 km), Chile accounts for more than half of the western coastline of South America. This razor-thin country is wedged between the Pacific Ocean and the Andes, the Earth's longest mountain range.

The Tigris river runs through Baghdad. It is about 1,150 miles (1,800 km) long. The name "Tigris" comes from Old Persian and translates as "the fast one".

Canada has more than half of all the natural lakes in the world. An impressive nine percent of the country is covered in fresh water.

The Sargasso Sea is a region in the middle of the North Atlantic Ocean. Surrounded by ocean currents, it is the only sea on Earth which has no coastline. It is bounded on the west by the Gulf Stream; on the north, by the North Atlantic Current; on the east, by the Canary Current; and on the south, by the North Atlantic Equatorial Current.

Although it is generally associated with Egypt, only 22% of the Nile's course runs through Egypt.

The driest place on Earth: the McMurdo Dry Valleys in Antactica. It hasn't rained there for more than 2 million years!

Machu Picchu is a 15th-century Inca citadel located in the Cusco Region, Urubamba Province, Machupicchu District in Peru, above the Sacred Valley.

Sudan is home to over 200 pyramids, more than twice that of Egypt.

Tatooine derived its name from Tataouine, a city in Tunisia located near the site where various scenes were filmed.