A subterranean shelter remains intact under a busy Paris railway station.

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

A counter-culture bookstore like no other hides in plain sight in the streets of Paris.

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

A museum of carnival attractions where you are invited to ride the rides.

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

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

Abandoned railway line circling the city of Paris.

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

France's most famous cemetery, with some of its most curious tombs.

This massive library holds what was once the largest book collection in the world.

Notorious artist squat renovated into legal studios.

A hidden network of subterranean passageways lies tangled beneath Indianapolis' bustling City Market.

This candy shop has been serving up sweets to the Louisville area since the 1850s.

This lone survivor of a regional franchise still slings delicious burgers and colossal servings of fries.

These abandoned grain silos and tunnels are an urban exploration dream.

Former meatpacking facility turned vertical farm and sustainable business complex.

Built to house a chapter of the Knights Templar, this grandiose building is a relic of Freemasonry in Chicago a century ago.

One-of-a-kind preserved ruins of an abandoned 1880s church in Chicago's Pilsen neighborhood.

One of the first historical sites of an alternative universe was installed in the town of Paris, Illinois—which is now home to an annual spelling bee of Kcymaerxthaereal words.

Oversized statues are just the tip of this nostalgic Americana roadside attraction.

Burial mounds of prehistoric Native Americans who lived along the DuPage River.

This lush 12-acre site was once named the finest Japanese garden in North America.

An Art Deco gem that held together the artistic heart of an agricultural community for 92 years.