Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

Destroyed Serbian army headquarters sits half crumbled in a largely revitalized Belgrade.

A towering spire in the fortress of Kalemegdan honors the victorious armies of Serbia during their struggles against the Ottoman Empire.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

A triumphant marble and bronze fountain depicting a 15th-century Hungarian king and his hunting party.

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

An ornate private entrance to the Vienna subway built specifically for the emperor.

The site is dedicated to an investigative journalist whose murder triggered a political uproar that changed Slovakia forever.

In an area known in Bratislava’s postal history, this sculpture sits equipped with a functional postbox.

A sculpture of the beloved author surrounded by characters from his fairy tales.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

On a winding Vienna side street, one museum has turned their windows into a monument to history’s peace-minded heroes.

Legends surround an ancient tree trunk riddled with nails for good luck.

A portly statue of a golden boy commemorates an unusual cause of the Great Fire of London: the sin of gluttony.

A mysterious artist-run cabinet of curiosities and library.

The canine-themed book collection claims to be Europe's largest dog library.

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

Once designed as the entrance to Buckingham Palace, this structure was later relocated and stands as a victory arch.

A little slice of Japan and its aesthetics in London's Holland Park.

A masterpiece of Art Deco architecture hidden in plain sight in West London.

Visit the WWII bunker where the British won the battle for the skies.

This life-size monument honors the legacy of a famous literary feline.

The next-door homes of two very different musicians, George Frideric Handel and Jimi Hendrix.

Bronze sculpture celebrating the relationship between Churchill and Roosevelt.