The little-known second castle that William the Conqueror built in York.

In an Auckland neighborhood, looming chopsticks lift noodles from the sidewalk.

The world's longest outdoor covered escalator system transports commuters through Hong Kong's hilly terrain.

A serene space tucked amid the skyscrapers of Hong Kong's bustling financial district.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

Travelers who fall victim to this mermaid's charms are destined to stay in Užupis forever.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

A statue honors the local legend that the devil helped build St. Mary's church after being tricked into thinking it was going to be a wine bar.

A stunning two-story timepiece within a medieval Brick Gothic church.

The bells remain in a shattered heap exactly as they fell when the church was bombed in World War II.

Dancing skeletal figures pay homage to a medieval mural destroyed during World War II.

This railway-turned-greenway provides a pedestrian link in downtown Detroit and celebrates urban artwork.

This sprawling bookstore spans four floors and has more than a million books in stock.

Marvel at this turn-of-the-century masterpiece that has been turned into a rather stately supermarket.

A wonderful and easily overlooked museum tucked in Ohio's Burke Lakefront Airport.

Cleveland's giant "free" stamp is a nod to the Civil War, but was misinterpreted for years.

Funded by John D. Rockefeller, this is one of the earliest, and most beautiful, shopping arcades in America.

His music once banned in Communist Cuba, John Lennon is now immortalized in bronze by Castro, who considers Lennon a "fellow dreamer."

After the Cuban Revolution, the famous rum company had to leave their swanky headquarters behind.

Once a favorite playground for the world's most illustrious guests, Hotel Nacional's secret weapons and bunkers reveal a more menacing side to its golden history.

A bronze sculpture of Lenin’s likeness outside Havana surrounded by 12 human figures in solidarity with the Bolshevik Revolution.

A focal point of the Cuban government, this city square features one of the most iconic images in the country.