Monument to a suicide protesting the Soviet invasion.

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

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

Catch a scenic view of Warsaw's Old Town from the top of a centuries-old dumping ground.

This Baltic beauty is rumored to grant a wish and a half.

A large boar commemorates the city's founding and the origin of its name.

Extremely famous in his native country, this Cracovian painter is all but unknown beyond Polish borders.

A 90-ton, gravity-defiant steam locomotive shoots for the skies in this bizarrely beautiful public artwork.

Before serving as James Bond's Casino Royale, this Victorian-era spa catered to the world's elite.

A six-story, asymmetrical tower filled to the brim with scientific experiments.

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

Looming communist pillar with a Czech twist.

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

Instead of sermons, this church became home to millions of books.

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

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

The bones of the Biblical Magi traveled to Constantinople and Milan before landing in their current home inside an elaborate golden reliquary in the Cologne Cathedral.

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

This coffee shop lies hidden beneath a historic church.

A measuring mishap led to these artificial stone ladies losing their stomachs.

The library houses an incredible collection of some of the world's most impressive books and manuscripts.

This sculpture encompasses the emotion of rail travel.

This open-air mosaic gallery honoring an English artist took hundreds of volunteers more than seven years to create.