This massive and unusual rock formation near Okotoks is the world's largest known glacial erratic.

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

Ancestral Puebloan ruins, natural arches, and box canyons abound in this seldom-visited corner of Monument Valley Navajo Tribal Park.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

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

Rippling sand dunes frozen in the Arizona rock.

Built after the 1991 discovery of one of the world's most complete T.rex skeletons in the nearby hills.

A broken man's homemade, seaworthy ship rests in the middle of the Canadian prairie.