This elaborate tunnel is the first structure composed of cast concrete in the United States.

The island home of an unlucky whaling captain whose story inspired a great American novel.

One of the oldest living oak trees in the Southeast.

South Carolina's last remaining slavery auction house is now a museum devoted to its own tragic history.

A gorgeous, Gaudí-esque stairway constructed in the city of Istanbul by a prominent Jewish family.

This playground sculpture of an icon from the past is dedicated to the children of the future.

A giant milk bottle from the 1930s beckons drivers to this diner.

The decorations were inspired by an unlikely missing treasure.

This inanimate goat created by the "welding nun" has been helping to clean up the city of Spokane for more than 40 years.

A classic carnival ride that was carved to be untouchable.

This quirky collection of furniture also happens to be a public art installation.

Home to an endangered salamander, a full moon celebration, and a large spring-fed outdoor swimming pool.

Art Deco urban decay at this historical building.

A giant cement churn carries the legacy of American resilience, unity, and greed.

This woodland architectural installation acts as a camera obscura for the heavens.

One of the oldest continuously-operated gay bars in the United States is allegedly haunted by Truman Capote and Tennessee Williams.

Europe’s most powerful hot spring supplies the surrounding region with hot water.

Love is in the air along the small street in Brooklyn.

One of the last remnants of the city's Chinese nightclub scene is now a dive bar selling killer mai tais.

This hidden oasis features a stunning view of the Hudson River and the Palisades from a castle-like museum.

An enormous pair of straw sandals woven in the traditional way—to keep demons at bay.

A replica of the flagpole that gave a frontier town its name.

This enormous monument is one of the most iconic structures in Tokyo, rudely nicknamed "The Golden Turd."

Mythical beasts symbolizing the city of Tokyo guard a historic bridge.