This gruesome biblical parade celebrates the one day a year that a bit of Jesus' blood turns to liquid.

The bronzed skull of a beheaded traitor was affixed to the city gate in the 17th century.

Potato-peeling mannequins, Inca art, and a dangling tuber mobile help trace the history of fries at this Belgian museum.

Christ's blood preserved in a Belgian town.

This former Masonic lodge has been transformed into part museum, part bar, all awesome.

The world's largest reflecting pool is just two centimeters deep.

The largest crypt ever constructed in France was built in the 11th century on an ancient Druid sacred site.

The famous winding walk at Chartres is surrounded in mystery and myth.

Paris' fabled purveyor of exotic taxidermy and natural history curios.

Exquisite wall sculptures carved in secret by an early quarryman in an obscure corner of the Paris Catacombs.

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

A favorite Paris bar for U.S. expats, including Gershwin, Hemingway, and James Bond.

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

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

The very center of Paris is surrounded by a bevy of strange good luck rituals.

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

Notorious artist squat renovated into legal studios.

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

The storefront of a ramshackle Parisian puppet theater.

A museum dedicated to one of Paris’s most famous residents, tucked into a corner of one of the city’s most famous squares.

With a history of slaughter, feast, and famine, remnants of the pork industry decorate this area--even its church.

The remaining relics of the patroness of Paris lie in a chapel under a striking double spiral staircase.

Saintly bones pressed into a wax effigy of a Catholic superstar.