The historic building has preserved human organs, unusual hexagrams, and scars from a political assassination.

Public water fountains built during the Ottoman Era still stand throughout this seaside town.

The secular incarnation of a religious meditation.

This building was once the most magnificent mansion in Nafplio.

This building served as the first customs house in modern Greece.

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

Giant WWII fortresses that fired 8,000 rounds a minute, now home to thousands of pigeons.

The world’s oldest military museum has remained largely unchanged since the last days of the Austro-Hungarian Empire.

A diminutive statue that was inspired by the sculptor's own daughter.

Some of the greatest minds in the history of Hungarian art and science converged in this café.

A stunning Art Nouveau cinema in the heart of Budapest.

The metal leaves on this tree are engraved with the names of Holocaust victims.

Hungarian Jews were ghettoized during the Second World War, but little remains of the original wall that closed the Jewish people off from the rest of the city.

A marvel of engineering, this road ascends a Norwegian hill through six spirals inside of it.

The design of this beautifully crafted building was inspired by Norwegian glaciers.

One of Europe's largest groups of dolmens remains largely off the typical tourist track.

An abandoned anti-smuggling station decays along the boundary between Portugal and Spain.

You can cross from one country to another in a single hop on this little bridge.

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

A line of disused military bunkers built to defend against Nazi invasion lies hidden on the outskirts of the city.

This museum promotes informed contraception by documenting its often secret past.

This series of Baroque passageways in Vienna's cultural center mix old architecture with modern art.

Beautiful Austrian natural history museum with carved ceilings and row after row of ancient taxidermy.

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