Here's some things that people loved to visit. They still would, if only they were still around.
First, here's a list of places that may or may not exist today or they have been put off-limits due to a variety of reasons from around the world.
It is from Travelerz:
They begin with:
Everybody loves a good vacation and an opportunity to travel and explore. But what if we told you that some of the most stunning tourist destinations in the world are now off-limits? Popular spots our grandparents used to enjoy are no longer accessible, or simply no longer exist, and we are to blame. Take a look back at the vintage travel hotspots that are now confined to history, for an opportunity to appreciate what's lost forever!
To see them, go here.
Here's a couple of videos by the late Ralph Story that is Los Angeles-centric. It is a video of "Things That Aren't Here Anymore".