This cavernous abandoned marble mine is popular with ice skaters in the winter.

This magnificent Japanese garden provides a moment of Zen in rural Vermont.

The ancient Greek Titan guards this massive dam holding a lightning bolt to symbolize electricity.

The European towns of Brașov and Râșnov each have proud signs reminiscent of the Hollywood sign.

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

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

The oldest continual pilgrimage site in Britain was supposedly created by a gruesome beheading.

At the United Kingdom's only residential library you can sleep among the books.

Head underground and take a tour of the city's working sewer system, and see the underground river Senne, which defined Brussels for centuries before being covered in the 19th century.

Brussels' favorite peeing boy has a sister.

A fantastical 13th-century fortification sandwiched by a modern hotel in central Brussels.

This modern arts center is built around a gem of late-Baroque architecture.

A little sculpture with a large wardrobe.

Meet the bronze beloved pet to a family of famous peeing statues.

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

Three floors of musical instruments coming from all corners of the world and hundreds of years of musical history.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

Most of Britain's gold reserve was secretly stashed here after the start of World War II.

This whimsical public art installation is a unique homage to Liverpool's industrial heritage.

The grand complex of buildings that comprise Liverpool's Exchange Flags includes a vast World War II bunker that has been frozen in time.

Charles Dickens described the concert room in this amazing Victorian hall as "the most perfect room in the world."

The tower was originally used as a chimney for the waste incinerator of St. John's Precinct and Market.

Gutted during the Liverpool Blitz, this architectural husk has been left destroyed in honor of the dead.

19th century tunnels burrowed under Liverpool.