This subterranean treasure trove is said to contain a motorcycle, a Chevy, and a teal leisure suit.

This once rural mansion now sits in the heart of the city.

A subterranean house of worship carved right out of the bedrock.

Architecturally stunning library serves as the hub of Finnish scholarly life and culture.

This insurance company building reminds customers that witches, bears, and gnomes are out there, best be insured.

These enormous, stern-faced statues greet visitors with lanterns, and sometimes costumes.

This homeless brass fox tugs at your heartstrings from the foot of a Stockholm bridge.

The prototype for all Nazi concentration camps.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

Liechtenstein's royal family calls this medieval alpine castle home.

Browse through a century of this principality's first popular export.

Home to the world's largest quilt collection dating from the 1600s through today.

Underneath downtown Lincoln resides a network of caves that was also the city's first brewery.

This little gem of a museum is a hidden jewel filled with prehistoric treasures.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

Brussels' favorite peeing boy has a sister.

A little sculpture with a large wardrobe.

From Tintin to the Smurfs, Europe's greatest graphic icons are celebrated in a grand Art Noveau gallery.

Climb inside an iron crystal magnified 165 billion times its normal size.

This striking royal residence is the largest Renaissance-style castle in Scandinavia.

The largest bottled beer collection in the world holds over 22,000 unique beer bottles.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.