This isolated village has Hollywood fame and a church with underground structures that date to the pre-Christian period.

This one-of-a-kind archeological site is home to strange prehistoric ruins, the original use of which is still a mystery.

A collection of wax anatomy by the great sculptor Clemente Susini.

Hidden within this iconic mountain are a set of World War II bunkers once used by German forces.

The 16th-century son of Sienese nobility carved this hermitage out of volcanic rock.

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

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

One of Vietnam's most iconic landmarks was built by Japanese traders and is now in danger of sinking.

Giant pagoda houses the car that drove Thích Quảng Đức to his death by self-immolation.

Artifacts and memories from the Vietnam war, located in a place that experienced it first hand.

A nightmare for the claustrophobic lies hidden in Southeast Asia.

A fire once nearly devoured this gorgeous 14th-century Gothic cathedral.

This communist behemoth is the heaviest building in the world and a legacy of a brutal regime.

This solitary monastery may hold the remains of Vlad the Impaler (but probably not).

This elaborately decorated, fairytale-like Romanian royal palace is one of the most striking castles in Europe.

This massive underground salt mine now holds a sci-fi theme park in its depths.

Some call this eerie forest of crooked trees the "Bermuda Triangle of Romania."

This fairy-tale castle would make Dracula (who is said to have been imprisoned there) jealous.

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

What looks like a link in Gondor's early warning system is actually a centuries-old Italian fortress.

Ever loyal to Roma, the small village of Albe in the Abruzzo region carried on until an earthquake did it in.

A 200-year-old bar is all that remains of one Mississippi River town's rough-and-tumble past.

Hot springs monkey spa in the middle of Hell's Valley.

Stuck in a bygone era, the oldest subterranean shopping street in Japan hides beneath the popular Asakusa district of Tokyo.