The Cycladic architecture makes this Athens neighborhood feel like an island paradise hidden in the shadow of the Acropolis.

Made by a man on a worldwide sanitation crusade.

Nikola Tesla's ashes are held in a golden sphere, surrounded by his works.

Famously misunderstood wonder of the ancient world

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.

World's first "penitentiary," meant to be humane, drove men insane.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

Trick water gardens from 1619 featuring a 200 piece mechanical theater powered by water.

Large Hadron Collider and the Birthplace of World Wide Web.

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.

This museum was invented in a novel before being made real by the author.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

The oldest Hindu temple complex in Nepal serves as the seat of Nepal’s national deity, Lord Pashupatinath.

For centuries young Thai men used this Giant Swing as a slingshot to heaven.

This elegant neoclassical garden is a peaceful oasis in the middle of the Nepalese capital.

One of the largest Buddhist stupas in the world keeps an eye out in every direction.

Sacred Buddhist home of some spiritual monkeys.

A battle between nature and architecture in the Cambodian jungle.

This irregularly shaped sea fortress has defended not one but three different sovereign states.

Brussels' favorite peeing boy has a sister.

Eastern Bloc nostalgia, anybody?

"Holy Wisdom" overlooks the city that became its namesake.