A steaming, boiling hellscape sources Hokkaido's thermal baths.

Learn about the indigenous people of Japan's northernmost islands.

A collection of sculptures that explore what's at stake when nature is thrown out of balance.

About as hidden as can be, this specialty coffee shop is wedged between multi-story buildings at the end of a dark, skinny alleyway in Seoul.

An underground city of salt.

This man-made mound monument was built out of soil from all across the Polish empire.

In the midst of a living monument to Soviet social engineering, Polish Catholics built this church by hand.

This sprawling concrete suburb of Kraków was designed by the Soviet Union as the model proletarian city.

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

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

A merchant court dedicated to the fictitious King Arthur is heavily adorned with bizarre Renaissance art.

These rare statues are one of the few remaining material witnesses to Old Prussian culture.

A mysterious emblem tucked in an small alleyway is actually the coat of arms of a heroic medieval family.

A huge wooden clock that is so beautiful its creator was forcibly blinded.

This fairytale inspired, warped building houses restaurants, shops, and a radio station.

This Communist-era residential block is one of the longest residential building in Europe.

This antique thermometer honors the creator of the first universal temperature scale.

A program of Communist glamour in post-Stalin Poland is preserved in this colorful museum.

Legend says this is actually a heartbroken prince waiting for his true love's kiss.

These 18th-century paintings of Warsaw were used to reconstruct the city after World War II.

A 20th-century picture show in 3-D.

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

A menacing statue of this mythical creature can be seen at the legendary site of the monster's lair.

This bell stars in a tragic love tale and is said to make wishes come true.