Famed for its pie, this eatery has a hidden tunnel that allowed Catholics to secretly walk to church during the Reformation.

Seven mini rowhouses fill the gap between 54 and 70 Westerstraat.

A tiny village in Wales claims the name of a noble medieval hound slain for a crime he didn't commit.

An enormous steel waterfall is a nod to the substance that shaped Britain's Steel City.

The church's remarkable frescoes incorporate Finnish artist Hugh Simberg's trademark themes of death and the supernatural.

Banksy's image of a naked man dangling from the window of a sex health clinic.

The western face was supposedly left clock-less to snub the Welsh.

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

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

This cheese shop also houses a museum devoted to Dutch dairy.

A lush indoor jungle fills this bustling Madrid transportation hub.

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

A memorial to the politician who became Great Britain's first fatality to be caused by a locomotive.

After mysteriously refusing to surrender at the end of World War II this sunken submarine was only salvaged in a search for Nazi gold.

The red letters in the literary pavement leading to the library form a mysterious code.

Mysteriously stacked storefront paths give this medieval British town an iconic style like none other.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

A fantastic castle rumored to be the birthplace of King Arthur.

This one has sailed five times as far as Sir Francis Drake's famous ship.

Artists and musicians now rule over this former rail station.

A naturally mummified 2,000-year-old man.

Eighty million natural history specimens call this gargantuan museum home.

Catacombs turned marketplace.

Unable to build support structures on glaciers, the engineers for this tramway were forced to design a unique system.