A former bank seized as a sniper vantage point during the Bosnian War is now a secret graffiti art gallery.

This picturesque monastery at the base of a cliff is a peaceful oasis open to all visitors.

Bridge that died in war and was resurected.

There's a mini version of Iguazu Falls hidden in the Balkans, and it's got a rope swing.

A curious little museum dedicated to the furry feline in the cat haven that is Old Town Kotor.

The lighthouse is on a island which is connected to another island, which is connected to another island, which is connected to one of the largest islands in the world.

Three bridges straddle a stream, one stacked upon the other.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

Hear the quietest sound from across the dome.

Eighty million natural history specimens call this gargantuan museum home.

Designed by Gustave Eiffel before his famed tower.

A haven for book enthusiasts across the street from Retiro Park.

These fly sculptures are scattered around the city and represent the patron saint of Girona.

A pair of gigantic baby heads greet passengers at Atocha Station.

A towering monument in Spain has proven to be more labor-intensive than initially planned.

For decades, Puerta del Sol has been illuminated by a giant, guitar-wielding bottle of sherry.

Eat the ultimate iteration of Portugal's most beloved pastry.

The Cape of Good Hope is not quite as low as you can go on the African continent, but it's still geographically significant.

A piece of the front end of a British cruiser that was used as a block ship in World War I.

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

A Cold War command center is hidden under an idyllic countryside.

The first mosque in the world to receive electricity.

Controversial site of what could be Europe's first pyramid.

A number of craters left by fatal mortar strikes have been filled with red resin to remember those lost during the Siege of Sarajevo.