The Jewish section of the famous Boothill Graveyard was abandoned for nearly 100 years.

This functional solar system model was inspired by the famous Eisinga Planetarium.

One of Monterrey's oldest buildings is perched atop a hill boasting impressive views of the city.

Hear the quietest sound from across the dome.

This museum looks at the history of one of America's most famous prisons and most beloved albums.

This castle was once considered as an option for the Royal Family's alternate residence, but you may know it better from the 'X-Men' movie.

The 700-year-old fortress was the site of Count Orlok's castle in "Nosferatu."

This awesome Spanish castle is so fantastical it was actually used on Game of Thrones.

The singular ruins of a mysterious lost city.

These sacred Mesoamerican ruins feature peculiar petroglyphs hidden in the stones.

The ruins of this temple were later chosen by Pope Celestine V to found an abbey and a hermitage.

The ruins of an important pilgrimage destination for worshippers of a Maya fertility goddess.

One of the world’s most colorful cemeteries, where each pigment is symbolic.

A small oasis not far from downtown Moab.

The remains of a centuries-old water system that inspired local legends of secret tunnels.

The graves of a Connecticut family thought to have been plagued by a vampire.

A wunderkammer hidden on the top floor of the Hartford statehouse.

An Escher-inspired library dedicated to the wonders of the human mind, yet closed to the public.

This exceptionally well-preserved ancient marvel also houses a small museum dedicated to Jordanian folk tradition.

This restored eighth-century palace is a shining example of ancient Umayyad architecture.

A disquieting Aztec sculpture displays hundreds of stone skulls representing the victims of human sacrifice.

A single column facing the sea is all that's left of one of the most important temples of Magna Graecia.

A barbarous band of serpents guard the bases of these Aztec temples.

The most gigantic, swoony, intimidating trio of fingers in all of antiquity.