The most loyal of little dogs, or a Victorian era publicity stunt?

A beautiful Greco-Roman structure houses a well once believed to have healing powers.

A labyrinthine network of chambers with a storied past hides below Edinburgh's South Bridge.

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.

Protecting the dead from opportunistic body snatchers.

The final resting place of soldiers' loyal canine companions.

A 18th century graveyard and its astonishing cortege of macabre iconography.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

These imposing walls and towers look more like the ruins of a fortress than a monastery.

The mummified heart of a saint lives on in this church—after a brief hiatus when it was stolen.

A charming desert roadside bakery that produces 10 times more bread daily than it has residents in its town.

Towering basalt columns, a creation of fire and ice.

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

The arch that celebrated the completion of the Lincoln and Victory highways.

Bill Murray bowled three straight strikes here at Reno's "Taj Mahal of Tenpins."

This beloved roadside attraction welcomes visitors with his signature neon smile.

Historic home to one of the most famous women pioneers of the 19th century.

Boise State's stadium was the first non-green football field in the world.

Home to the deepest rift anywhere on Earth.

This great stone guardian of the forest is a relic from the land's volatile volcanic past.

Make it an offering.

Oregon's unexpected high desert, displaying layers of time in a colorful show.

This perfectly preserved Chinese medicine shop was untouched for decades before being reopened as a museum.