I've put together a pair of lists to check out. They are for UFO Hotspots. Both world wide, and for the United States.
It's not just something I pulled out of a hat Willy Nilly, I searched as many other sites and similar lists, compiled them and came up with the following, there isn't any descriptions as to why, just listings:
The World Wide Listing is as follows:
1 - Chile's UFO Trail - San Clemente, Chile