This 600-year-old home seems to defy physics.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.

Copenhagen's celebrated theme park and gardens.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

This relatively recently abandoned brewery is a tragic reminder of the continuing effects of Hurricane Katrina.

An abandoned underground bunker not far from downtown New Orleans.

This distinctive Crescent City tradition dates back to the days of horse-drawn carriages.

The world-record holder for the longest bridge stretching continuously over water.

This Art Deco airport was once deemed “the air hub of the Americas.”

The oldest family-run restaurant in the United States is a living museum of New Orleans dining history.

The first patented shaved-ice machine heralded a snowy wonderland of iced treats at a favorite New Orleans summer shack.

Before becoming a public park, this spot was a shell midden, a fort, and an amusement park.

The oldest operational cathedral in the U.S. has one shell of a way of projecting speakers' voices.

The LSU mascot lived on the college campus in one of the most impressive tiger habitats in the country.

World's largest precision optical instrument used to detect Einstein's elusive gravity waves.

One of the longest water bridges in the world was built over a supposedly haunted swamp in Louisiana.

A 19th-century Gothic, castle-like statehouse by the Mississippi River.

A Cajun-style Christmas on the river also involves sky-high pyres and explosives.

A swamp and garden tour featuring local wildlife and exotic botanical specimens from around the world.

For 150 years one family has been producing the iconic hot sauce on a bayou island made of salt.

In 2010, Nicolas Cage purchased two plots in this cemetery using one to construct this strange pyramid mausoleum.

A museum and shop on Bourbon Street located in the former home of the second Voodoo Queen of New Orleans.

Largest illuminated advertisement sign in the world.

Daily jousts and dancing barrel makers in Munich's mechanical clock.