Schnebly Hill Road, Arizona Thirteen miles of intense switchbacks guide drivers through the vast remnants of a primal sea that existed here hundreds of millions of years ago. It used to be covered in lava -- but now it serves to link the city of Sedona with Interstate 17.
How about a 3-mile-long glacier that you can visit in your car? That's the Athabasca Glacier, located in the spectacular Columbia Icefield near Jasper in the Canadian Rockies. Visit soon, though, as this behemoth beauty has been receding at a rapid clip for the past century. (Photo by Naxos)
Tamul Falls, Mexico - These spectacular turquoise falls are only a day's drive from Texas. In the town of Tanchachín, you can raft up the canyon, passing by spectacular rock formations and the ancient ruins of Tamtoc, before arriving at one of the continent's most beautifully blue waterfalls.
The road that runs parallel to Johnston Canyon is a highly recommended stop in the outskirts of Banff. Starting from Johnston Canyon Lodge, there are two sections: the lower falls, that you can reach in less than half an hour, and the upper falls, which add an extra hour (round-trip) to the walk but are certainly worth it for the height of the falls. The trail is clearly marked and has spectacular wooden walkways that at some points can be dozens of feet above the river.