The parting of the waters in the USA is such an interesting landmark for just how uninteresting it actually is in person. Looks like any other split in a forest river, marked by a sign on a tree that you can only see after a long wilderness hike.
https://en.wikipedia.org/wiki/Parting_of_the_Waters
https://www.anotherlongwalk.com/2022/07/day-119-parting-of-w...