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

Conspiracy theories and occult legends surround this mysterious natural rock formation.

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

This Transylvanian church has changed its denomination four times.

On any given day this sprawling market houses literally tons of government-regulated gold, gems, and precious metals.

The world's largest frame offers spectacular views of the city's past and present.

This Dresden church was purposely rebuilt Protestant after being demolished in World War II.

The largest 19th century panorama in the world still in-situ.

A miniature city, once ruled by the Queen of the Netherlands.

The former home of a trailblazing surrealist is still filled with haunting dolls and grim paintings.

Stocking up on the world's best beer requires a pilgrimage to a monastery drive-through.

Museum in a swimming pool where the water still flows.

A modern-day Lascaux cave underneath Paris.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

A Parisian exterminator's shop whose storefront displays stuffed rats hanging from traps.

His "Lionheart" is entombed separately from the rest of his body.

Giant topiary dog once played a role in a terrorist bomb plot.

Hang out with thousands of butterflies in one of the world's largest such enclosures.

Hundreds of Buddhas in a re-discovered Indonesian temple.

This precariously balanced boulder is said to be a hunk of stolen butter dropped by the gods.

The remains of what was, not so long ago, the world's largest city.

Modest by day, illuminated majestically at sunset.

Time has stopped at the house where Gandhi died.

A blooming house of worship for the masses.