Niagara Falls is the biggest waterfall in the world. 3160 tons of water flows down Niagara falls each second. Niagara falls has a state park called Niagara falls state park and it’s actually the oldest state park In the U.S.
Grand Canyon
The Colosseum is a 1900 year old amphitheater that is now a wonder of the world. It used to be a gladiatorial field where gladiators would fight other gladiators or even animals like lions,tigers or even bears. There was an underground section of the arena that was used for training, and gladiators would have a cell there depending on how good they were.
Great wall of China
The Pyramids of Giza were built 1200 before king tut's ruling, The Pyramid of Giza is also 481 feet tall! Also in case you didn’t know regular people didn't build the pyramids, it was the Egyptians who built it. One last thing is that The pyramids were built outside of Giza, Egypt.
Stonehenge
The Grand Canyon is one of the largest canyons in the world. It's so big that the entire park is bigger than the state of Rhode island. The canyon is full of holes and caves and the Mississippi river runs through it. In case you didn’t know, in 1909 the canyon was thought of as a hoax.
The Great Walls of China are the biggest and longest walls in the world, considering the fact that it extends from the north pole to the south pole. 400,000 people died building the wall, which just shows how big it is. Also in case you were wondering you can't see the wall from space.
Stonehenge was built by people who left no records or marks and it's really old, so no machine could have put it there. Studies have shown that the rocks were from over 200 miles away.It is said that a wizard called Merlin which was an Arthurian legend.