A lively circle of dancers in the Georgian capital commemorates an ancient rite of spring.

A preposterously luxurious hotel with gold-plated iPads, Rolls Royce chauffeurs, and a staff that trains by watching "Downton Abbey."

This indoor ski resort has a mountain contained inside a mall.

The building is a gigantic piece of art inspired by the shape of a desert rose.

Qatar's oldest market can trace its origins back more than a century.

This fountain pays homage to Qatar's history of pearling, the primary industry before oil.

An unphotographable nightly march of tens of thousands of "fairy penguins" from sea to shore.

Massive puppet-automaton machines created by French artist collective Machines de l’Ile.

This Bordeaux parking garage has 712 indoor spaces, and one outdoor.

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

Bordered by forest on three sides and the ocean on the other, the Great Dune of Pilat is the highest sand dune in Europe.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

One of the most spectacular bridges in Spain spans a narrow chasm that divides the city of Ronda.

The Roman city was the birthplace of various emperors and is home to one of the empire's most impressive architectural feats.

The world's largest wooden structure.

A Spanish town built into the cliffs.

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

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

A haunting collection of the vanished and disappearing natural world.

Natural history museum celebrating biodiversity with a parade of taxidermy animals.

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

Known as the "Dodo Manège," this carousel features a herd of animals that have disappeared—or may be gone soon.

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

This museum houses an imposing skeleton army comprised of creatures great and small.