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

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

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

Every part of this unusual home is built into the sandstone rock.

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

Massive installation of Europe's negative stereotypes.

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

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

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.

The rusted creatures wait to be discovered in Prague's botanical garden.

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

The soulless eyes of 82 bronze children stare on forever in remembrance of a horrifying World War II massacre.

The mystery of the Putim Ossuary involves a tricorn hat.

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

One of the famous Czech artist's lesser-known Prague installations appears to be a glowing fetus affixed to a drainpipe.

A controversial artwork draws attention to the dark history of Prague's "Suicide Bridge."

These 17th-century mummies are no longer naturally preserved, but remain on display today.

Mysterious painted skulls in Moravia.

Steadily reminding Czechia of its past.

Folklore says this medieval fortress was plopped atop a portal to hell to trap the demons below.

A former squatter's paradise outside Prague.

The last municipal pneumatic post system in the world was in operation for over 100 years, and may run again.

Monument to a suicide protesting the Soviet invasion.