Abandoned railway line circling the city of Paris.

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

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

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

The world's tallest bridge is also possibly the most elegant.

An Orthodox church built by the Royal Family for the Russian community exiled to the French Riviera.

Artist's eccentric property excessively decorated with found objects and work of his own.

The construction of a tram line unveiled hidden remnants of the old medieval city.

This massive blockhead sculpture hides an entire library.

A medieval military street hidden beneath a charming French fishing village.

A place to see how French aristocrats lived in the early 1900s.

This Corsican Neolithic site is full of pre-Roman megalithic structures that may or may not be penises.

Napoleon's childhood home is now open for people to explore the beginnings of France's short general.

This effigy of Peter the Great is greatly disproportionate.

A replica of the famed statue far from home.

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

This impressive working clock made of 16,000 plants changes its flowers twice a year.

Holy Hindu shrine in an enormous, monkey-filled limestone cavern.

One of the world's tallest flagpoles.

An exploration of Malaysian heritage through the lens of traditional textiles.

Hang out with thousands of butterflies in one of the world's largest such enclosures.

An iconic Soviet statue of working-class people.

Stalinist skyscraper built with help of cryotechnology.

Gargantuan home of Russian science.