Atlas Obscura
Explore & WanderA catalog of the world's strangest, most overlooked places.
Why it made the cut
Wikipedia has an entry for the Eiffel Tower; Atlas Obscura has one for a Cold War-era doomsday bunker turned museum, and a cave system that's also technically a nightclub. It's a whole encyclopedia built entirely from the places that never made the postcard.
Try it when you're Bored
Visit atlasobscura.com