After the attack on Pearl Harbor, rocks and fossils from every U.S. state were collected into a pyramid of national unity.

It's believed Elvis Presley was inspired to write his breakthrough track after staying here.

A museum collection honoring the long history of the FDNY is held in a disused Manhattan fire house.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

A terrific purveyor of natural history objects and curios.