The Great Wall of China is the longest wall in the world, stretching over 13,000 miles.
The tallest mammal in the world is the giraffe, which can grow up to 18 feet tall.
The largest living organism on Earth is a fungus called Armillaria ostoyae, which covers 2,200 acres of land in Oregon, USA.
The highest point on Earth is Mount Everest, which stands at 29,029 feet tall.
The deepest point in the ocean is the Challenger Deep in the Mariana Trench, which reaches a depth of 36,070 feet.
The largest desert in the world is the Antarctic Desert, which covers an area of around 5.5 million square miles.
The longest river in the world is the Nile River, which stretches over 4,000 miles.
The largest lake in the world is the Caspian Sea, which is actually a lake and not a sea, and it is bordered by five countries.
The largest volcano in the world is Mauna Loa, which is located on the island of Hawaii and is still active.
The largest planet in our solar system is Jupiter, which is also the fifth planet from the sun.