One of Scotland's earliest hydroelectric power stations.

An exceptional engineering feat that facilitates the migration of salmon upstream during their breeding season.

A bay of elaborate, historic toilets are held in high esteem at this Scottish dock.

Nestled amid the peaks and lochs of the Scottish Highlands, this inn and pub has played host to outlaws and ghosts.

This massive, 30-foot-tall statue of the famed Scottish knight overlooks a grassy knoll.

This picturesque view of the Scottish Borders was beloved by Sir Walter Scott.

This Scottish tollhouse was a destination for clandestine marriages in the 18th and 19th centuries.

One of the highest Roman forts in Britain is set amid dramatic scenery on a notoriously difficult road.

This expansive bridge in the Canadian wilderness was originally just built for friends.

The largest and best-preserved Roman amphitheater in Africa was designed to seat 35,000 people.

The original film set of Luke Skywalker's Tatooine home from the 'Star Wars' trilogy.

Made famous by 'Star Wars,' these troglodyte homes face an uncertain future.

One of the most spectacular canyons in the world.

Exploring the wilder, more passionate sibling of Erg Chebbi feels like discovering a secret sun-kissed planet from another galaxy.

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.

World's largest film studio, where visitors tour the decaying sets that litter the harsh desert environment.

A small, but award-winning beach known for its literally spotless reputation.

These flying foxes dangle from the trees around the library like fuzzy black fruit.

Australia's largest collection of rare and bizarre insects.

Let these towering termite-building structures tell you where to go.

Malaysia's floating mosque.

A symbol of Islam in oil-rich Brunei.

Ferdinand Magellan dubbed the world's largest water village the "Venice of the East."

The world's second-largest sundial, made entirely out of stone.