An industrial site turned into Hungary's most cherished natural wonder.

One of the few cold geysers in Europe, its eruptions are powered by carbon dioxide.

This picturesque castle in Poland has a rich history, including a legend that ties it to lost Incan treasures.

This tower in a small Polish village uses the power of a sacred bell to ward off mischievous weather spirits.

A towering relic of Upper Silesia’s industrial past, the blast furnace of Huta Pokój stands as a monumental reminder of the region’s former role as one of Central Europe’s most important iron and steel production centers.

A stream flows near the radioactive spa, where people place handmade miniatures of water mills and other strange devices.

An artificial hill and apparent calendric structure built in the Early Middle Ages immortalizes a legendary Polish princess.

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

A Soviet era flat that refused to conform to the dull gray standards.

There are thousands of tributes and memorials to the King, but none quite like this one in a Kraków city park.

A cheeky reminder about the value of art dangles above one of Olomouc's busiest streets.

Witness to Nazi occupation, this bunker has managed to soldier on to this day.

Towering sandstone rock formations where 'The Chronicles of Narnia' was filmed.

Once overlooking the town, this church now resides on a permanent tilt.

This medieval castle was reconstructed by Carlo Scarpa.

This beautiful Croatian fortress is haunted by legends of forbidden love.

The most impressive example of contemporary Romanian architecture in wood

The shattered remains of the world's once tallest structure.

A tribute to the first human in space.

The first, and perhaps only, monument dedicated to Wikipedia.

An enchanting monastery in the Spanish countryside appears lifted from a fantasy tale.

This ancient Spanish castle sits high upon a hilltop.

Mine shafts and hard pastries await visitors at this massive mountain of salt.

On this spot in 1989, nearly a thousand people broke through the Iron Curtain.