300 years of pharmaceutical history on display.

A collection of intricate sculptures so small they have to be seen through a microscope.

A museum dedicated to a secret military hospital hidden beneath a castle in Budapest.

A series of caves under Castle Hill that once held the prisoner Vlad Tepes, better known as Count Dracula.

A museum in the childhood house of a medical pioneer.

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

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

Sitting beneath an unremarkable residential building is a museum devoted to classic Pinball.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

This off-beat, quirky communism-themed bar isn't afraid to poke fun at its history.

Possibly the world's largest hourglass only needs to be reset every New Year's Eve.

Electrical curiosity museum housed in an old transformer station.

Medieval irrigation channels built into the sides of mountains provided Valais with water for hundreds of years.

An icy lake tucked among jaw-dropping alpine panoramas.

This lovely little bridge hidden in a Switzerland gorge is essentially a fairytale.

A well-preserved medieval village nested on a rocky outcrop and surrounded by a network of cliffs, natural bridges and canyons.

Hundreds of dwarf beeches create an unusual, haunting forest in the north of France.

A cave dwelling that was started by the Celts, expanded by monks, and finished by knights.

150 or so scrounged-up lamps, chandeliers, and lanterns light up this alley in central Athens.

According to myth, Zeus himself was hidden in this cave to escape being eaten by his dad.

The hallucinogenic center of the ancient world.

A spectacular cave and a beguiling lake.

Monasteries on rock pillars, once accessible only by frayed ropes.