Gateway Arch — St. Louis, Missouri

Gateway Arch. Shutterstock

Before European explorers arrived in St. Louis in the 1500s, it was a city of 20,000 people called Cahokia.

Gateway Arch National Park used to be known as Jefferson National Expansion Park, with the arch symbolizing America's westward expansion and Manifest Destiny.

The name was changed in 2015 to shift away from honoring a movement that forced Native Americans out of their lands and ravaged their communities. The museum under the arch was also renovated to include personal responses from Native Americans to questions like "Does staking claim to land justify national ownership?" according to the Washington Post.

"Why did they feel that they could go out and just take these lands?" National Park Service historian Bob Moore told NPR. "Basically they believed it was their God-given right."