This 40-room dwelling tucked within a cliff was built by the basin's prehistoric residents.

Open since 1938, this diner has kept its fountain, malt machine, and all the gum that greasers left beneath its counter.

This rustic cabin, outfitted with gun slits, was once home to John D. Tewksbury, patriarch of the bloodiest family feud in American history.

This former lieutenant governor's home is brimming with curiosities.

Walk through the actual strap iron cells and solitary chambers of Arizona Territory’s first prison.

On the outskirts of a reborn ghost town, a decaying post office remembers the bad old days.

An urban laboratory.

See massive fossils that are over 200 million years old in northeastern Arizona.

Eons ago, a rushing lava river formed this pristine passage through solid rock.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

Dramatic river bend surrounds a natural red-rocked pedestal.

Most-visited and most-photographed slot canyon in the American Southwest.

These fantastically named natural pools look like something out of a Scottish myth.

An abandoned, desolate train tunnel that was used during World War II.

This huge concrete map of Scotland was built as a thank you gift from a Polish soldier.

A historic cave in Scotland once served as a hiding place for a famous Covenanter.

This modern labyrinth lies in the shadow of a ruined medieval castle.

Modern megaliths form this work of cosmic, Celtic landscape art.

A 30-acre garden inspired by the principles of modern physics.

Legend says this cave housed a 16th-century cannibal and his family of 48.

The world's spiciest ice cream comes from Glasgow.

What is the Thing?

Limestone caves with spectacular showcase chambers.

Take a monster truck tour around an ostrich farm in the middle of the desert.