The Great Wall of China is very educational for kids and good exercise for your family. The wall is thousands of miles long but I recommend walking 2-4 miles when visiting. We visited the Mutianyu location here. The souvenirs we bought there were awesome because it was a wooden sword that I could battle with my brother.
There is a fun entrance and exit. The entrance is a ski lift that is kind of scary but also very exciting. The view has beautiful trees and mountains to look at and admire. Remember do not wear Crocs because mine almost fell off on the way up.
The exit is fun too because you can ride on a “cart slide” called a Toboggan down the mountainside. Please be careful because you can crash if you go too fast. I recommend having adults with you if you are under 12 years old and use the double-seater. For older kids and adults you can use the single-seater.
Everything at the Great Wall of China was very magnificent. There are many old buildings and towers there to explore. I also saw some cannons too which were used hundreds of years ago to defend against the Mongolians. My favorite part was the Toboggan and I wish I could ride it again.
Tips: Be warned there are many bugs. Most of them you can’t see and may attack you. So bring bug spray just in case of mosquitoes and other insects.