The first piece of public art dedicated to LGBT rights.

One of only two commuter aerial tramways in the United States.

Elevated freight railway turned wildly successful urban park.

Try not to get slimed in Tribeca.

A bizarre roadside attraction and the first instance of miniature golf in the world.

This large cave is a summer home to thousands of bats and has a rich history dating back to prehistoric times.

A natural sandstone bridge hidden in the Sewanee forest.

An ancient cave system in Tennessee’s Appalachian foothills converted to a 1,200-person music venue.

Georgia's first brewery is also one of its oldest surviving buildings.

Three bronze deer sculptures relax along the Scioto Mile.

A lighthouse on this West Virginia lake started as a joke, then the forces of nature helped make it a reality.

The tallest waterfall in West Virginia.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

One Portuguese poet described this cape, the westernmost point in mainland Europe, as "where the land ends and the sea begins."

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

The house that Frank Lloyd Wright "(shook) out of his sleeve at will" at the age of 86.

There aren't too many operational funiculars around, but Pittsburgh has two!

One of the steepest streets in the United States makes an intriguing challenge for cyclists.

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

A southern Swedish island is home to the last ERSTA artillery battery, meant to protect the shoreline during the Cold War.

The oldest Swedish built lighthouse still guides ships through the archipelago.

This legendary dessert was served to Nobel laureates for decades.

A 130-year-old urinal is the oldest of Stockholm and perhaps all of Sweden.