FACT#1. The Great Wall of China is the longest wall in the world, stretching over 13,000 miles.
FACT#2.The tallest mountain in the world, Mount Everest, is located in the Himalayas on the border of Nepal and Tibet.
FACT#3.The largest ocean in the world is the Pacific Ocean, covering over 60 million square miles.
FACT#4.The highest waterfall in the world is Angel Falls in Venezuela, with a height of 3,212 feet.
FACT#5.The largest desert in the world is the Antarctic Desert, covering over 5.5 million square miles.
FACT#6.The longest river in the world is the Nile, stretching over 4,000 miles.
FACT#7.The deepest point in the ocean is the Challenger Deep, located in the Mariana Trench with a depth of 36,070 feet.
FACT#8.The oldest city in the world is Jericho, located in the West Bank, with evidence of settlement dating back to 8000 BC.
FACT#9.The largest lake in the world is the Caspian Sea, covering over 143,000 square miles.
FACT#10.The most populous city in the world is Tokyo, with a population of over 37 million people.
FACT#11.The largest animal on land is the African elephant, weighing up to 14,000 pounds.
FACT#12.The fastest animal on land is the cheetah, capable of reaching speeds of up to 75 mph.
FACT#13.The tallest animal in the world is the giraffe, with a height of up to 18 feet.
FACT#14.The longest animal in the world is the blue whale, measuring up to 100 feet in length.
FACT#15.The most venomous animal in the world is the box jellyfish, found in the waters of the Pacific and Indian Oceans.
FACT#16.The deadliest animal in the world is the mosquito, responsible for the deaths of over 700,000 people each year.
FACT#17.The largest bird in the world is the ostrich, weighing up to 345 pounds.
FACT#18.The smallest mammal in the world is the bumblebee bat, measuring just 1.1 inches in length.
FACT#19.The largest fish in the world is the whale shark, measuring up to 40 feet in length.
FACT#20.The smallest fish in the world is the Paedocypris fish, measuring just 7.9mm in length.
FACT#21.The oldest known tree in the world is a bristlecone pine, found in the White Mountains of California and is over 5,000 years old.
FACT#22.The tallest tree in the world is the coast redwood, measuring up to 379.7 feet tall.
FACT#23.The largest flower in the world is the Rafflesia arnoldii, which can grow up to 3 feet in diameter.
FACT#24.The largest living organism in the world is the fungus Armillaria ostoyae, which covers 2,200 acres of land in Oregon.
FACT#25.The oldest known fossil is a stromatolite, dating back 3.5 billion years.
FACT#26.The largest volcano in the world is the Mauna Loa volcano in Hawaii, which is an active shield volcano and one of five volcanoes that form the island of Hawaii.
FACT#27.The deepest lake in the world is the Lake Baikal, located in Russia and is 5,387 feet deep.
FACT#28.The largest island in the world is Greenland, covering over 830,000 square miles.
FACT#29.The smallest country in the world is Vatican City, covering just 44 hectares.
FACT#30.The largest country in the world is Russia, covering
FACT#31.The tallest building in the world is the Burj Khalifa in Dubai, standing at 828 meters (2,722 feet) tall.
FACT#32.The longest suspension bridge in the world is the Akashi Kaikyō Bridge in Japan, spanning 1,991 meters (6,532 feet).
FACT#33.The largest waterfall by volume is the Iguazu Falls, located on the border of Argentina and Brazil, with an average flow of 1,746 cubic meters per second.
FACT#34.The largest cave in the world is the Sarawak Chamber in Malaysia, measuring 2,300 meters (7,500 feet) long, 400 meters (1,300 feet) wide and 70 meters (230 feet) high.
FACT#35.The largest coral reef in the world is the Great Barrier Reef, located off the coast of Australia and stretching over 2,300 kilometers (1,400 miles) long.
FACT#36.The largest glacier in the world is the Lambert Glacier in Antarctica, measuring over 400 kilometers (250 miles) long and up to 100 kilometers (62 miles) wide.
FACT#37.The largest hot desert in the world is the Sahara Desert, covering over 3.6 million square kilometers (1.4 million square miles).
FACT#38.The largest rainforest in the world is the Amazon Rainforest, covering over 5.5 million square kilometers (2.1 million square miles).
FACT#39.The largest waterfall by height is the Angel Falls in Venezuela, standing at 979 meters (3,212 feet) tall.
FACT#40.The largest glacier by volume is the Antarctic Ice Sheet, with an estimated volume of around 26 million cubic kilometers (6.2 million cubic miles)
FACT#41.The largest waterfall by width is the Khone Falls in Laos, measuring at 9,800 feet wide.
FACT#42.The largest canyon in the world is the Grand Canyon, located in Arizona, USA and stretching over 446 kilometers (277 miles) long, up to 29 kilometers (18 miles) wide, and 1,800 meters (5,905 feet) deep.
FACT#43.The largest iceberg in the world is the A-68A, which calved off the Larsen C Ice Shelf in Antarctica in 2017 and is estimated to be around 2,240 square kilometers (862 square miles) in size.
FACT#44.The largest canyon by volume is the Valles Marineris on Mars, stretching over 4,000 kilometers (2,500 miles) long, up to 600 kilometers (373 miles) wide, and up to 7 kilometers (4.3 miles) deep.
FACT#45.The largest volcano by volume is the Tamu Massif, located in the Pacific Ocean, with a volume of around 1.2 million cubic kilometers (290,000 cubic miles).
FACT#46.The largest geyser in the world is the Steamboat Geyser in Yellowstone National Park, USA, which can reach heights of up to 91 meters (300 feet).
FACT#47.The largest dome in the world is the Kebira Crater in Chad, Africa, with a diameter of around 70 kilometers (43 miles) and a depth of around 500 meters (1,600 feet).
FACT#48.The largest volcano by height is the Mauna Kea volcano in Hawaii, measuring at 4,205 meters (13,796 feet) tall, although most of its height is underwater.
FACT#49.The largest river delta in the world is the Ganges-Brahmaputra delta, located in Bangladesh and India, covering an area of around 105,000 square kilometers (40,500 square miles).
FACT#50.The largest lake in the world by area is the Caspian Sea, covering an area of around 371,000 square kilometers (143,000 square miles).