The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

Largest Roman Catholic church in North America.

One of the oldest living oak trees in the Southeast.

Hidden amid the old-world charm of Savannah is a museum dedicated to the world of oddities and criminal history.

A statue honoring 44 continuous years of greeting passing ships.

"X" marks the spot of an echo chamber in the middle of a plaza.

Spanish architects used seized Muslim gravestones to rebuild parts of the fortress.

Thirteen pastel palaces in downtown Charleston add a gorgeous splash of color to the city.

Oldest unrestored plantation house in America that is open to the public.

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

In the world's most bombed country relative to its size, this incredible organization helps pick up the pieces.

When the USA donated cement and funds to expand the airport in Laos, the Laotians built a massive monument instead.

A remnant of the last Ice Age, this lake is surrounded by fascinating rock formations.

A bypass decorated with large wooden troll carvings.

Software company Epic Systems has created one of the strangest and largest workplaces of all time.

Statue dedicated to the star of an old television show.

The bugs crawling down the front of this office building are almost as big as a '68 VW Beetle.

Every winter, the wind carves blocks of frozen water into beautiful abstract shapes inside this unusually curved tunnel.

This striking art museum holds an amazing series of curiosity cabinets.

A remote hill on a stretch of country road where the laws of physics are defied... or so it seems.

A giant, Gilded Age mansion that once belonged to the beer baron of Milwaukee.

A place to eat for on-the-run agents and espionage enthusiasts.

This cave holds a surprisingly colorful variety of geological oddities.