Lie in a hammock where George Washington stood.

Possible relics of the ancient Roman city are hidden in this restaurant's façade.

This Wall Street bar was once a hub of revolutionary activity where Washington famously bid farewell to his troops.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

The façade of this building looks like a bingo board, but it's really a giant clock by a famed graphic designer.

This beautiful Brooklyn monument over a crypt memorializes a grim and largely unknown story from the American Revolution.

The longest continuous underwater road in North America was built at the insistence of Franklin Roosevelt.

This impressive mansion in Vinegar Hill has some mysterious details in its architecture.

Walk into the 19th century without leaving Brooklyn.

Set sail on a small scale.

Abandoned 19th century homes once occupied by naval officers, soon to be demolished.

A popular European tradition makes its way to the states on one of America's most famous bridges.

Michael Jackson got Bad and Crocodile Dundee walked on heads in this iconic Brooklyn subway station.

This block in downtown Brooklyn was a hotbed of antislavery activism along the Underground Railroad.

The Underground Railroad passed right through this historic Brooklyn Heights church.

Brooklyn's most iconic restaurant, resurrected.

Ride the subways of yesteryear.

Just your average Marie Antoinette–themed speakeasy in an abandoned 19th-century subway tunnel.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

A red sandstone freestanding monolith rises out of the sea in northern Scotland.

Amazing and mysterious Neolithic settlement on Scotland's Orkney Islands.

The true age of this ancient stone circle is unknown, but its stunning vista isn't in question.

A quarter mile off the coastal tip of Maine you'll find the "Beloved Island" of Franklin Delano Roosevelt.

This national park on the shore of Lake Michigan features remarkable dunes that lie at the heart of a Chippewa legend.