Macabre astrological automaton clock dating to the late 1400s.

Destroyed Serbian army headquarters sits half crumbled in a largely revitalized Belgrade.

The topiary maze at the Habsburg hunting lodge.

This former insane asylum now holds a pathological anatomy museum.

Handsomely crafted representations of our round planet.

A small museum filled with over 1,000 clocks, and one particular clock calibrated to run until the year 9999.

The beautiful baroque library of the Hapsburg empire.

Macabre museum devoted to historical Viennese murders.

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

Op-art architecture designed for happiness.

Museum devoted to the artificial language of Esperanto.

Hungarian mummies in beautiful painted coffins.

A Hungarian pharmacy museum with a box full of mummy powder.

The mummified right fist of a 1,000-year-old saint-king sits inside an ornate golden reliquary.

A museum in the childhood house of a medical pioneer.

Electrical curiosity museum housed in an old transformer station.

Once the home of a hermetic monk, this cave now houses a small church.

A 19th-century artistocrat's mansion, turned into a library, hidden in a modern library.

A battle between nature and architecture in the Cambodian jungle.

A quick and simple solution to Cambodia's train woes.

Ha Long Bay's "Cave of Surprises" houses a popular phallic rock formation.

5,000 skulls in memorial to those killed by the Khmer Rouge.

A nightmare for the claustrophobic lies hidden in Southeast Asia.

Turkish adventurer antiques in the heart of the Grand Bazaar.