This diminutive yet beautiful local stepwell once yielded enough water to irrigate the lush fields of the village.

This abandoned stepwell is one of the largest, deepest, and certainly one of the creepiest in India.

The roof of one of the world’s largest spice markets provides a grand view over the neighborhood's glorious bustle.

Made by a man on a worldwide sanitation crusade.

A startling, centuries-old subterranean marvel hides in plain sight.

This beautiful 16th-century necropolis marks an astonishing feat in heritage conservation.

A blooming house of worship for the masses.

An ancient instrument used to measure the waters of the Nile so Egyptian farmers would know whether to expect famine or flood.

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.

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

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

Notorious artist squat renovated into legal studios.

Abandoned railway line circling the city of Paris.

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

Turntable anonymously received orphans, alms, and groceries.

A mythically themed self-built sculpture park.

Vines grow up the metal bars in this public park created from an old machine factory.

This eclectic architectural gem played witness to Zurich’s colonial past.

See the rare bloom of the "Queen of the Night" cactus at one of the world's largest succulent collections.

Constructed along the shores of Lake Zurich, this pavilion is a walk-through work of art.

Museum dedicated to wax representations of disfiguring diseases.

Featuring a meatless buffet fit for kings, this family-owned Zurich eatery is considered the oldest vegetarian restaurant in the West.

A 200-year-old tavern challenges guests to finish a glass of wine while hanging from a ceiling beam.