A fascinating insight into daily life in the Eastern Bloc.

One of downtown Berlin's last reminders of its Communist past.

A socialist building dedicated to teachers showcases one of the largest Soviet mosaics in the world.

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

A moss-covered statue of a Japanese Buddhist deity stands at a quiet temple in downtown Osaka.

One of the world's largest tanks mimics the experience of watching rare whale sharks, giant rays, and deep sea creatures from the ocean floor.

The seat of the lost Ryukyu Kingdom has survived numerous fires and wars over the centuries.

Two geological phenomena in one precarious locale: a towering stone window, and a deep blue void.

This enormous "cloth of the conquest" depicts the Norman invasion of England in mind-blowing detail.

France's Lilliputian park displays over 100 of the country's monuments for visitor perusal.

An ancient ossuary in Rouen.

This medieval tower is all that remains of the castle where Joan of Arc was held before being burned at the stake.

The shape of this old salt factory complex was inspired by the course of the Sun.

Wander among free-roaming storks at the sanctuary that helped save them from local extinction.

The castle was reconstructed to fit Kaiser Wilhelm II's romanticized vision of the Middle Ages.

Explore this medieval cathedral by trying to spot all the malevolent monsters hiding in its beautifully colored windows.

This medieval cathedral houses stained-glass windows featuring saints and pretzels.

In the days before house numbers, these colorful signs held clues about various buildings' purposes.

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

This cheese shop also houses a museum devoted to Dutch dairy.

The world's only museum devoted to the wonders of fluorescence.

This massive mural by famed pop-artist Keith Haring was hidden for almost 30 years until its 2018 rediscovery.

Tucked in the back of a flower shop, its collection details the fascinating history of the Netherlands's iconic symbol.

The former home of a mad diplomat is said to still be marked in bloody, arcane scrawls.