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

Visitors flock to the historic birthplace of radiobalneology for its therapeutic radium treatments.

A Cold War secret surveillance tower used to spy on radio communications.

This renaissance château was home to an infamous witch hunter who sent a hundred suspected witches to their deaths.

The sanctuary holds what was once believed to be the saint's incorruptible tongue.

This hanging crocodile is thought to be the "dragon" that once plagued a Czech city.

Tiny communists hammer away on the Olomouc Astronomical Clock.

This Czech military museum is home to pink tank that was once a symbol of art and political rebellion.

A peculiar clock commemorates a historic victory won by ringing the noonday bell an hour early.

An ornate plague column – built to celebrate life – claimed the lives of numerous artisans during its construction.

A series of playful yellow penguins share a serious message about the environment.

The slender brass strip in Prague's Old Town Square was used to tell time from 1652 to 1918.

A surreal statue honoring Prague's favorite literary son.

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

This walkway is so narrow it needs its own light to stop pedestrian traffic jams.

Enormous sandstone towers loom within a Czech forest.

A bus with a butt and biceps to put Olympic athletes to shame.

This unusually shaped mountaintop tower looks like a UFO floating over the city.

Monument to a suicide protesting the Soviet invasion.

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.”

A mocking tribute to the past and modern leadership of Prague.

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

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.