1. Machu Picchu, Peru
Located high in the Andes mountains of Peru, Machu Picchu is now believed to have been a sacred royal retreat for the Incan rulers. Built in the 15th century AD and abandoned less than a 100 years later, the remote site continues to amaze with its perfectly joined, mortarless, intricate stonework. Huge multi-ton blocks of stone are perfectly joined with each other, without the use of mortar or cement.
2. The Grand Canyon, Arizona
This incredible natural wonder is in the U.S. state of Arizona. It’s one of those beautiful places for which photos or video just don’t do it justice—its sheer size and scope is hard to comprehend. With geology formed over the past two billion years, yes billion, the 277 mile-long canyon itself is believed to have been started around five to six million years ago. It was formed by the flow of the Colorado River, which still flows through it and continues to erode the geology along its course. The Grand Canyon is up to 18 miles wide in places and up to a mile deep. Imagine standing on the edge, looking down a sheer rock wall almost a mile to the river below.
