An ancient system of freshwater caves filled with animal bones, including that of species long-extinct.

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

Every equinox this Maya pyramid puts on a spooky ancient light show.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

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

There must be a pun in this haystack somewhere...

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

A little slice of Japan and its aesthetics in London's Holland Park.

A Japanese corporation has turned this small island town into living modern art gallery.

Colloquially known as “piss alley,” this narrow street filled with tiny bars and barbecue stands looks like it was pulled straight out of “Blade Runner.”

The 10,000 Torii shrine.

This gold mine–turned–swimming hole is the perfect summer picnic spot, immersed in nature and history.

Victoria's largest salt lake is a favorite haunt for photographers and stargazers.

Bomb tests and sheep ranchers share the world's largest military land base.

You can climb to the top of the world's largest rocking horse.

This historic tall ship traveled 1.5 million miles around the globe, and once did duty as the mythical pirate ship in Peter Pan.

Melbourne's favorite bronze dog.

Enjoy all the trappings from 1912 aboard this Titanic-themed restaurant.