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

Macabre astrological automaton clock dating to the late 1400s.

The hidden lair of an alchemist rediscovered in a 2002 flood.

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

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

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

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

Dine amidst exotic plants at this former royal greenhouse.

A tropical paradise just a short trip from the opera house is filled with beautiful winged creatures.

An exquisite Baroque church in Vienna's old town.

The solemn exterior conceals an opulent interior of this 17th century church.

These two 15th-century metal rods allowed people to check if they were swindled or not.

The final resting place for the remains of 143 Habsburg royalty.

Designed as a reminder of one of the darkest moments in Austrian history.

The townhouse where the "Blood Countess" Elizabeth Báthory started her murderous career.

In the middle of a Vienna square, Roman ruins dating back some 2,000 years are on display.

Museum devoted to the artificial language of Esperanto.

Handsomely crafted representations of our round planet.

These relics of the city's past now exist as a prominent modern feature.

Visiting this café is like visiting the Austrian grandma you wish you had.

Also known as the Blue Church, the building was consecrated to the daughter of Andrew II.

This statue points to another unusual companion work of art often overlooked by visitors.

According to the local legend, these boys and ducks were turned to stone by an angered water goblin.

No one knows the origin of this creepy little stone man with an oversized phallus.