This unreal Portuguese palace looks as though it's made from a pile of different castles.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

The giant statue and its model solar system honor the native Pole who declared that the Earth revolves around the Sun.

The Polish capital has had a deep connection to its guardian mermaid for almost a millennium now.

After the famous composer died in Paris, his sister snuck his heart out of the country to honor his wish that it be buried in their native country.

Museum dedicated to "the man who moved the Earth."

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

Real bones which are said to have belonged to a Polish dragon.

This symbol of Polish heritage survived the occupation during World War II, hidden in plain sight.

These abundant, over-the-top monuments are so widely scattered that they define the entire compact capital cityscape, often leading to jokes about whether there are more statues than residents.

This towering church is home to a world-famous organ and a treasure trove of medieval art.

This virtually windowless mass of smooth concrete is the only Catholic church in the city.

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

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

This statue of the great Argentinian car driver is located near a famous curve of the Monaco Grand Prix.

A bronze tribute to Mika Häkkinen's 1998 Monaco victory.

Museum celebrating the ocean, with the largest wunderkammer dedicated to sea exploration.

A haunted outpost in Moldova, where guards are said to have fired at a ghostly figure.

A vivid and terrifying mural blends pop-culture-style depictions of Hell with traditional Orthodox imagery.

A statue dedicated to the founders of communism.

A unique collection of Soviet military artifacts lies hidden away in a disused train, in the unrecognized Eastern European republic of Transnistria.

This sign marks the entrance to a tiny proto-state within the small country of Moldova.

Dynastic Home of the De Piro Family.

Despite the name, these small saltwater swimming pools have nothing to do with the Romans.