This ancient theater, restored in the 20th century, lives on as a venue for dramatic and musical performances.

Dedicated to the unsung history of human waste.

Bullet holes in the church wall are a reminder of the violence that followed the assassination of a high-ranking Nazi officer.

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

What looks like a crashed Zeppelin is actually a bright, airy reading room perched atop a modern museum.

A surreal statue honoring Prague's favorite literary son.

The palace window through which Protestant nobles flung two Catholic regents, thus sparking the Thirty Years' War.

Be(w)ar(e) the moat around this historic Czech castle.

An existential riddle in the world's largest ancient castle.

A sculpture of the iconic East German car on four legs is a tribute to those who traveled to Prague seeking asylum.

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

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

The risqué mixed-media sculptures are supposedly a metaphor for Czech politics.

An eerie, existential museum dedicated to the author of "The Metamorphosis."

This artificial cave looks like something out of a fairytale.

Buried five stories underground, this Soviet bunker is packed with gas masks and Cold War paraphernalia.

A 400-year-old mummified arm dangles from the ceiling of St. James the Greater, serving as a warning to thieves.

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

Europe's second largest ossuary wasn't discovered until 2001.

Nine limestone rock stacks on Australia's "Shipwreck Coast."

Is there such thing as too many fruit bats? Not anymore.

Though considered an eyesore by some, this boxy Brutalist high-rise plays a significant role in Sydney's past.

There's nothing shrimpy about the world's largest artificial prawn.

Brisbane's manmade urban beach has enough water to fill five Olympic-sized swimming pools.