The world's longest known cave system.

The sign to a demolished amusement park now stands in front of a local library.

This floating sculpture of ice is a poignant reminder of nature's power.

The only rotating bar in New Orleans has been slowly spinning since 1949.

These barriers stand as stark reminders of Northern Ireland's troubled past.

A beautiful footbridge with over 2,000 glass sculptures along the walls and ceiling.

The last living thing to come out of the rubble after 9/11 is now a symbol of hope and resilience.

The first piece of public art dedicated to LGBT rights.

The mysterious image is believed to show Edward Hyde, 3rd Earl of Clarendon, in a beautiful blue dress.

This kitschy tavern is also home to rare early editions of "Treasure Island."

This awkward aquarium sculpture is one of the strangest statues in Chicago.

An artist's cute bronze subway sculptures belie his violent artistic past.

A particularly disconcerting tribute to Irish martyrs.

The world’s largest truck stop includes a barber shop, chiropractor, and a huge museum with antique trucks.

Now abandoned, the first public health hospital in the U.S. saw more than one million immigrants from around the world.

This ancient Irish tower could easily have stood in for Rapunzel's prison.

The ancient tomb acts as a calendar that keeps perfect time.

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

Salute the leader of the proletariat.

The somber sculptures commemorating Irish Famine on the river Liffey in Dublin.

Designed by Buckminster Fuller, this relic of the 67 Expo survived fire and ice.

Largest tulip festival in America, includes fireworks, a parade, and a carnival.

A unique sculpture park that specializes in the huge and bizarre.

Construction of Barcelona’s iconic (but controversial) church was finally completed in 2026—a century after the death of its architect.