Relics designed to contain and conceal Yugoslavian submarines.

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

A 16th-century mosque rebuilt after wartime devastation.

Carefully reconstructed after the Bosnian War, this 16th-century bridge stands as a symbol of the country's enduring multicultural heritage.

Bridge that died in war and was resurected.

A field filled with carved medieval tombstones called stećak.

The last remaining example of a painted house from the medieval period in Nice.

A statue for a zoo that was never built.

A Flintstones-themed eatery in the heart of Ayia Napa’s party strip.

A cynical face-off exposing the cost of war.

The graffiti that birthed modern algebra.

An incredible natural formation along the Wild Atlantic Way.

This poignant sculpture of a gnarled weapon is a symbol of non-violence.

A monument to a beloved aquatic folk hero in the Irish town of Dingle.

A relic of the region's rich seaweed industry.

A tiny art gallery where artists can donate their work for the public to take and enjoy.

This peaceful open space below Geneva's famous cathedral is full of art and history.

A pre-war mansion that survived the modernization of Athens.

An iron dragon with a long neck covered in feathery scales perched above one of Venice's most popular squares.

A beautiful Victorian-era mausoleum, designed for a single occupant.

One of the four clock faces on this church is mismatched, in a nod to a historic slight.

Check the time in 145 countries at once with this East German relic.

This 15th century church is where the Pilgrims spent their last night in the Netherlands before setting sail for America.

A towering sculpture, likened to an adult toy, sparked local and national debate.