This irregularly shaped sea fortress has defended not one but three different sovereign states.

Only a fragment of this 15th-century Dance of Death survives today.

Before serving as James Bond's Casino Royale, this Victorian-era spa catered to the world's elite.

A plaque marks the spot where the saint was shoved off the Charles Bridge and into the river.

The slender brass strip in Prague's Old Town Square was used to tell time from 1652 to 1918.

This spooky statue sits outside a famous Prague theater.

The palace window through which Protestant nobles flung two Catholic regents, thus sparking the Thirty Years' War.

A turn of the century building boasting some of the most beautiful art nouveau architecture in Prague.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

Six turbines towering over a wide road for passersby.

The tallest church in Mechelen might have been the tallest in the world if not for a lack of funds.

Rediscovered in 1992, this abandoned medieval village once flourished by fishing and piracy.

A fascinating and enormous collection of natural history exhibits stained by a dark colonial legacy.

A whimsical bridge uses saxophones to pay tribute to two great men and the European Union.

This memorial museum chronicles the apocalyptic destruction of the First World War.

The patron of this extravagant Art Nouveau confection insisted that nothing less than a boat should project from its facade.

The highest point in Belgium is a staircase to nowhere.

Rare wooden escalators lead deep down into an otherwise staggeringly monotonous tiled tunnel.

Shipwrecks, ruins, and turtles are all that remain on this haunting Caribbean ghost island.

Located near Cairo's El Korba district, the abandoned mansion continues to inspire mystery and rumor throughout the city.

Standing atop 2nd-century Roman ruins, this church is one of the oldest and most iconic in Old Cairo.

An endless sea of white conical domes.

The oldest monument in Marrakesh and the city's only surviving example of Almoravid architecture.

Deliberately hidden for centuries, the magnificent Saadian Tombs were eventually uncovered in 1917.