A once-booming Mississippi River town with a history of racial violence is now eerie and mostly abandoned.

Macabre astrological automaton clock dating to the late 1400s.

This abandoned amusement park was built on a site with a dark history.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

In a city that boasts four separate inclined cable railways, this is one of the busiest funicular lines in the world.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

The largest bottled beer collection in the world holds over 22,000 unique beer bottles.

Pre-Nazi swastikas adorn the sculpted pachyderms flanking this brewhouse portal.

See prehistoric footprints, plus two complete mastodon skeletons.

Everyone's invited to put on a miniature concert with this world-class musical wonder.

This remote fort on the Yukon River is a vestige of the wild Alaska gold rush.

The walls, tables, and much of the ceiling in this pizzeria are covered with $40,000 in $1 bills.

This amended headstone marks the grave of a participant in one of the most successful military deceptions of all time.

Also known as the Cathedral of the Plains, this church holds the distinction of being one of the "8 Wonders of Kansas."

This National Natural Landmark is one of the best examples of a “mass wasting” in the world.

The place to be if you love vintage Swedish cars.

Climb to the top of its spiral spire for spectacular views of Copenhagen.

The art museum is decorated with creatively remodeled pre-Nazi swastikas.

This pair of gilded girls atop an Art Deco building in Copenhagen were built to function as a weather indicator.

Opulence and fantasy collide in this royal chair which is supposedly made with unicorn horns.

Nordic giants resurrected from the sea and restored to their former greatness.

An exhibition of preserved locomotives housed in a 1950s depot shows the history of Denmark's railway.

Along this stretch of beach in Denmark resides several massive bastions of energy.

The last Viking king of Denmark is buried inside the crypt of this cathedral.