The modern birthplace of Irish freedom.

Dublin's most modern, visually spectacular bridge is modeled after Ireland's national emblem.

A faded reminder of what was once a common sight in London during the Blitz.

A quiet memorial to those who died saving others in the heart of the City of London.

Putting the "mod" in "modular" since 2000.

The bronze uniforms commemorate the vital role of women during World War II.

This statue of the famed author, actor, and journalist is made entirely of screw-nuts.

This Nazi-built amphitheater was constructed on a sacred mountain site used by various German cults.

This memorial park stands on the site of one of the largest mass executions of the Second World War.

One of Belgrade's most beloved animals.

Along the banks of the River Rhine lies a park that seems unassuming, but beneath the surface lies a long and fascinating history.

A statue dedicated to the antihero of the Nibelung legend.

A castle from the Holy Roman Empire that hosts traveling youth... in its stables.

A famed artist's inspiring work of peace and tolerance.

A memorial for a young woman and her ghost, which are claimed to have caused countless deathly shipwrecks.

A palatial former bank building now houses what may be the poshest art venue (and former Tesco) in Belfast.

The maze-like transportation hub contains abandoned areas, derelict stores, and a resident bat colony.

This Vietnamese bar doubles as a multistory labyrinth.

A 14th-century Serbian Orthodox church that was once converted into a mosque under the much-disfavored Ottoman Empire.

Surprisingly delicious Asian-style hot dogs.

A plaque bearing the names of those who dedicated themselves to protecting Budapest's Jewish population during World War II.

This quiet, unassuming spot in Budapest was the birthplace of the bloody 1956 Hungarian Revolution.

A random tree outside a Budapest hotel has become a DIY shrine to the late singer.

Sitting beneath an unremarkable residential building is a museum devoted to classic Pinball.