These spartan apartments are provided to clergymen visiting Vatican City.

Breathtaking and huge 430 year old maps of Italy.

The "Greatest Sewer" of ancient Rome is one of the oldest sewer systems in the world, and is still in use.

Rome's semi-secret peephole vista is also a former Crusader stronghold.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

The "world's biggest dinosaur" once housed a creationist museum in its abdomen.

This golf ball–shaped former desert real estate office now houses a UFO museum.

An homage to everyone's favorite prehistoric cartoon family.

The highest point in Arizona is an oddly snow-topped peak within the otherwise arid state.

This memorial pyramid marker honors one of the United States Government's first official camel riders.

An artificial crater field that trained astronauts for lunar exploration.

A reproduction of earth's many biomes.

A spiritual vortex among the red rocks in Sedona.

A Wild West jailhouse that slid down the mountainside.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

Concrete crosses scattered across the Arizona scrubland which were used to align spy satellites.

An urban laboratory.

An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

There are lots of hands and feet stamped in the cement in front of Grauman’s Chinese Theater, but Mel left behind something extra.

Established in the '60s, a family-owned tropical drink bar founded by Ray Buhen, bartender to the stars.

Experience a quartz crystal sound bath inside a storied, all-wood sound-chamber.

The American rainmaker and a burst dam.

This quirky roadside attraction dives into the many theories surrounding North America's most infamous hairy cryptid.