One of the oldest masonic museums in Paris.

Inside a former cabaret, seven floors of erotic art.

Paris' linguistic guide to the international language of, yes, love.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

This bridge was constructed from the rubble of the infamous Bastille.

Where the high court feasted, frolicked, and high courtesans put their royal lovers' diamonds to the test.

Statue of death tucked in the University of Medicine courtyard.

Remains of Roman amphitheater hidden in a sleepy quarter of Paris.

19th century pendulum and a clock restored by a rogue group of guerilla artists.

A museum of magic with a Sadist past.

A lone cannonball remains lodged in the walls of the Hotel de Sens as a sober reminder of a revolution.

Notorious artist squat renovated into legal studios.

"In the Dark" Restaurant in Paris offers dinner in complete darkness.

The celebrated eyesore created by starry-eyed sweethearts.

An accidental trick of light casts the perfect shadow of a pilgrim of the Camino de Santiago against the cathedral wall.

Single runway interrupted by a busy road that cuts across its middle.

Spanning the El Chorro gorge, this pathway used to be one of the most dangerous crossings in the world.

Considered the birthplace of the Copper Age and Bronze Age, the river is tinted red from 5,000 years of mining.

The Cathedral of Salamanca has a number of unusual carvings but none so surprising as a modern astronaut.

The final resting place of the great navigator, or maybe his brother.

A chunk of the "true cross" is held in this small Portuguese church where modern day exorcisms are said to be common place.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

This small chapel is built of human bones and decorated with a golden skeleton.

Houses are tucked between, on, and underneath giant boulders.