A large lava tube that can be walked through with no special equipment.

Sunset-colored dunes of volcanic ash make taking a poor photo impossible.

An enormous and lavish Gothic church in Czechia.

A church of bones, decorated with 40,000 human skeletons.

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

Nine bronze hands protruding from a wall honor the student uprising that led to the fall of Czechoslovakia's Communist government.

Spitfire airplanes with butterfly wings hover over Prague’s skyline.

According to local legend, the devil shattered this column after losing a bet.

This monumental neo-Renaissance tomb in Vyšehrad Cemetery is the final resting place for Czech cultural legends.

A saintly relic hidden in a Prague church basement.

The largest and best-preserved rotunda in Prague.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

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

A surreal statue honoring Prague's favorite literary son.

The statue of a cursed knight is said to come to life every 100 years.

This doorless 20th-century elevator doesn't stop or slow down.

Macabre astrological automaton clock dating to the late 1400s.

What looks like a suicide in progress is actually a statue of Sigmund Freud.

This automated sculpture of two men peeing will spell out text messages with their micturition.

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

The medieval "Bearded Man" relief still serves as a clever flood warning marker.

A plaque marks the spot where the saint was shoved off the Charles Bridge and into the river.

This artificial cave looks like something out of a fairytale.

Steadily reminding Czechia of its past.