It's always seemed so bonkers to me that Yosemite National Park was made in 1890 and yet Hetch Hetchy, which was part of the park, was dammed in the early 1920s. I get that it was a different time and all, but come on, you can't go around destroying part of a NP like that.
1 - https://en.wikipedia.org/wiki/Tulare_Lake 2 -https://en.wikipedia.org/wiki/Hetch_Hetchy