This almost a century old piece of architecture had been overlooked by most, except for the drunk and the homeless

A striking, modern church devoted to a nun who loved God and beer.

One of the oldest, well-preserved water treatment facilities in all of Europe.

The largest manmade caves in Europe now function as a motorbike club's headquarters.

Tall columns of volcanic basalt make up this improbable-seeming rock formation.

The 14th-century ruins are said to contain healing powers.

A massive 1830s industrial site once known as Czechia's "Iron Heart" has been transformed into a playground of science, technology, and art.

This network of conjoined cellars was riddled with traps and supposedly allowed the townspeople to pretend their homes were deserted.

Throughout this shopping mall are medieval ruins that were discovered during the mall's construction.

A massive, abstract lookout tower providing a panoramic view of Prague.

The deepest sinkhole in Central Europe comes with a grisly tale and an unusual nickname: “The Stepmother Abyss.”

Enormous sandstone towers loom within a Czech forest.

The world's greatest slide descends 18 stories from this looping mountaintop viewing platform.

The oldest garden in Prague, once part of an medieval orchard.

This former quarry is now a picturesque gorge that hides a sunken lake.

A spiral staircase twists to the top of this unusual Czech lookout tower.

Europe's largest natural bridge has a 19th century royal chateau built into its side.

A turn of the century building boasting some of the most beautiful art nouveau architecture in Prague.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

This artificial cave looks like something out of a fairytale.

Walk through Czech history in Prague's largest graveyard.

Two stunning 17th-century libraries and a cabinet of curiosities.

Rusted structures stand like ghosts of Cyprus' 6,000-year-old copper industry.

This former Cyprus flight hub is now a crumbling, abandoned ghost complex.