This plaza is home to a number of works, including Montpellier‘s own Arc de Triomphe.

A 120-year-old legend concerning an empty circular patch in the North Carolina woods.

This castle played host to the largest great hall found in medieval Central Europe.

The illuminating collection of L.A. street lights is run by the city and only opens one day per month.

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

This crumbling, graffiti-covered mansion sits tantalizingly within reach of the proletariat who frequent a public park.

Experience architect Le Corbusier's modernist design for living in the home he designed for himself.

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

This Parisian café sticks almost exclusively to an ethos of reuse.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

A modern-day Lascaux cave underneath Paris.

The headless bodies of more than 1,300 guillotined victims of the Reign of Terror are buried here in mass graves.

The ruins of a Duke's bucolic dream, where camels once roamed alongside "Dutch" windmills and faux-Italian vineyards.

A scandalous Art Nouveau collaboration that set Paris all atwitter at the turn of the century.

This Parisian fountain is a little bit fantasy and a little bit nightclub.

Indents in the pavement are all that remain from a grisly death machine in Paris.

Despite being considered a thoroughly American sport, basketball's oldest surviving playing field is found in the basement of a Paris YMCA.

One of the oldest medical collections in Europe focusing on rare surgical instruments.

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.

Walk upon the mementos of the dead in this Parisian courtyard paved with medieval tombstones.

Home to the world's oldest functioning orrery.

Repurposed space and ultra-modern construction collide to create this geometric wooden spectacle.

Birthplace of the "Cat in the Cradle" and a cluster of iconic, original windmills that let the Dutch tame the seas.