The last remnants of what was once one of the world's grandest hotels can now be found in a Manhattan subway station.

Every hour the doors open to reenact the legend of the heroic mayor who saved his town by drinking a gallon of wine.

This small museum once served as a royal hunting pavilion for King Otto Friedrich Ludwig.

Where commuters walk through remnants of an ancient Greek necropolis.

These caves secretly held national treasures during World War II.

Legend says this sacred tree was a gift from goddess Athena.

Hoax, mistake, or evidence of dinosaurs in human times?

One of Vietnam's most iconic landmarks was built by Japanese traders and is now in danger of sinking.

The spot where the two men ate together now stands enclosed in glass.

The notorious "Hanoi Hilton" where Vietnamese colonial subjects and later American POWs, including John McCain, were imprisoned.

Monument to a brutal, ineffectual US bombing campaign and a sobering reminder of the human cost of the Vietnam War.

Overlooking the Colorado Convention Center is this giant sculpture made from thousands of triangles.

Once a ferry dock, radio transmitter, and now a new Greenpoint park.

Currently housing a corporate bank branch this building at the southern tip of Manhattan was once the gateway to luxury vacationing.

Twice a day one of these tragic bronze mariners drowns with the tide to remember all those the sea has taken.

The home of the first American-born saint is one of the only curved buildings in New York.

This anonymous businessman sculpted in bronze became an enduring memorial after 9/11, and had been mistaken by rescue workers for a survivor in the rubble.

This lower Manhattan bar is set up in an old bank vault that rests beneath a skyscraper that hides even more historic splendor.

Manhattan's Thirteenth Avenue was made on landfill then deliberately destroyed — apart from one small, obscure block.

Long the exclusive domain of birds and vagabonds, this little-known Central Park peninsula is open to the public once more.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

The fanciest public restroom in New York City boasts fresh flowers, art, and a classical music soundtrack.

Although built to generate electricity for Marylanders, this dam has become an all-you-can-eat buffet for American bald eagles.

A rural colonial settlement that contains the remains of a store and cooper.