This former mining hub holds a surprising abundance of undisturbed relics from the Old West.

Part home garden, part sculpture field, part pseudo-science experiment, a trip to this place will leave you wondering if sea water isn't actually the elixir of life.

This niche museum devoted to ancient religious artifacts is shaped like the very thing it displays.

This rock in the middle of a river in Jayuya contains dozens of Pre-Columbian Taíno petroglyphs.

Built some 700 years ago, this Taíno ceremonial site features ball courts, petroglyphs, and evidence of ancient astronomy practices.

This exuberantly curated landscape is one of the largest sculpture gardens in Canada.

A coastal rock outcrop with mysterious inscriptions variously attributed to Native Americans, Portuguese, Phoenicians, Norse, and more.

The kind of mixed-up place that drives archaeologists crazy.

Blackfoot petroglyphs of southern Alberta which date back as far as 7000 B.C.

Hundreds of pieces of ancient Taíno art cover the walls of this Caribbean cave system.

Trails through lava-carved tube-caves display sparkling bacteria and a rich history.

A petroglyph map of the upper Snake River carved by prehistoric hunter-gatherers.

A Native American petroglyph, the site of an emigrants' waystation, and the ruins of an early 20th-century sheep camp are all found at this crossroads.

A scenic ravine with an astounding collection of rock art created by the Indigenous people of the Great Plains.

The now-abandoned tunnels were built for the transcontinental railroad on the route where the first wagon train entered California.

This dry lake bed contains the oldest known petroglyphs in North America.

The last physical evidence of the Lewis and Clark trail is one of their autographs etched into this giant rock.

Thousands of acres of beautiful wild landscape in the Great Basin.

The semi-reclaimed ruins of this canal were once part of an ambitious plan to reroute the mighty potomac.

This beautiful ancient site is dotted with perforated sandstone pillars considered sacred by some Native American groups.

This rest area is also home to a remarkable petroglyph site.

This central Nevada cave is the spiritual home of ancient and enigmatic pictographs.

A mountain range on an active U.S. Navy base hides thousands of mysterious prehistoric rock carvings.

A large, remote national monument highlights the typical geologic structure seen in Nevada.