The oldest operating pharmacy in the world features 800-year-old recipes.

A rare water-powered funicular, it uses a huge tank of water and gravity to do its work.

Gods clash with machines in a power plant regenerated as a museum.

The bizarre visions of H.R. Giger, tucked away in a Swiss medieval city.

A Gothic cathedral created from volcanic rocks.

Historic funicular railway, believed to be the shortest railroad in the world.

The underground sanctuary of a mysterious ancient cult.

The bomb-ravaged remains of of a colossal Neptune.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

The remnants of an early American attempt at missile defense.

An ancient artistic garden parlor full of hidden water wonders.

Mural made of 100,000 pieces of hand blown glass, and until recently, the largest glass mural in the US.

The final resting place of the poets Shelley and Keats.

Rome's ancient Etruscan rival, now a park full of ruins.

Virgil's many-mouthed gateway to the underworld.

This "mathematical tower" was an observatory, early skyscraper, and place to reflect on all of nature and the cosmos.

A smoke stack so large, the Washington Monument could fit inside!

A stunning cemetery famous for its extraordinarily delicate & lifelike mourning sculptures.

This modern French ossuary contains the jumbled bones of 130,000 WWI soldiers.

Cretean quarry suggests real-life site for ancient Greek myth of the man-eating Minotaur in his labyrinth.

Crypt mausoleum in cathedral's basement contains relics of third century Roman martyr, Saint Vibiana.

Fortified medieval tower house with lovely roof garden.

An eccentric garden of sculptures crafted in India decorate an Irish green space dedicated to Alan Turing.

Architectureal fantasy quarter of Rome.