During the solar phenomenon "Lahaina Noon" this bendy, curvy sculpture forms a perfectly circular shadow on the ground.

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

Climbing this abandoned railway leads to breathtaking vistas of O‘ahu.

Beach instrument turned bed and breakfast.

One of Mexico's youngest major cities still holds on to this structure representing its short modern history.

What if all public housing projects had been designed by "the Pygmalion of modern architecture," not only their prototype?

For a brief time in 1960s France, families could climb into a tiny submarine and be pulled along an underwater journey.

Hamburgers are intensely proud of their tunnel beneath the river.

World's strongest whirlpool.

Digger attempting to hide itself under 300 tons of rubble.

This inverted metropolis model is the artist's "revenge" for not being allowed to have a doll house as a kid.

Denmark’s never-ending bridge.

This colorful artistic feature atop a Danish art gallery allows visitors to stroll through a rainbow.

This ancient theater was once the home of fierce gladiatorial battles.

The mental institution where Van Gogh created some of his most famous work now allows guests to walk in the artist's footsteps.

A small park on Bourbon Street features life-size bronze statues of New Orleans musicians.

The only home of the famous French impressionist painter open to the public is now a museum and bed and breakfast.

A little piece of Paris in the sultry south of the U.S.

Once defending the city of New Orleans from invasion by sea, this fort faces an uncertain future.

This knobby, drooping New Orleans oak is a favorite place both for climbing and for meeting giraffes.

This New Orleans tree is filled with hidden chimes that produce a carefully tuned melody.

Thousands of flowers create enchanting pink tunnels over the city streets.

This small train ride offers stellar views of the Grand Garden Palace.

An exquisite panometer representing Dresden as it was from 1695 to 1760.