3. The Georgia Guidestones

 

While most of the mysterious monuments on this list only became that way as centuries passed, the Georgia Guidestones, also known as American Stonehenge, are one landmark that was always intended to be an enigma. The monument, which consists of four monolithic slabs of granite that support a single capstone, was commissioned in 1979 by a man who went by the pseudonym of R.C. Christian. A local mason carefully crafted it so that one slot in the stones is aligned with the sun on the solstices and equinoxes, and one small hole is always pointed in the direction of the North Star. Most interesting, though, are the inscriptions on the slabs, which an accompanying plaque describes as œthe guidestones to an Age of Reason. In eight different languages, the slabs offer a strange ten-point plan to ensure peace on Earth that includes vague proclamations like œprize truth“beauty“love“seeking harmony with the infinite, to very specific commands like œmaintain humanity under 500,000,000 in perpetual balance with nature. Comments like this one have made the Guidestones one of the most controversial landmarks in the United States, and they have long been protested and even vandalized by groups that would like to see them demolished.

The Mystery
For all their controversy, very little is known about who built the Guidestones or what their true purpose is. R.C. Christian claimed he represented an independent organization when he commissioned the landmark, but neither he nor his group has spoken up since its construction. Since the monument was built during the height of the Cold War, one popular theory about the groups intentions is that the Guidestones were to serve as a primer for how to rebuild society in the aftermath of a nuclear holocaust.

1. Stonehenge

 

Of all the worlds famous monuments, none has gained as much of a reputation for pure, simple mystery as Stonehenge . Stonehenge has been inspiring debate among scholars, scientists, and historians since the Middle Ages. Located in the English countryside, the landmark is believed to date back to 2500 BC, and consists of several mammoth pieces of rock arranged and piled on top of one another in what appears at first to be a random design. The site is surrounded by a small, circular ditch, and is flanked by burial mounds on all sides. Although the rock formations that still remain are undoubtedly impressive, it is thought that the modern version of Stonehenge is only a small remnant of a much larger monument that was damaged with the passing of time, and it is largely believed that the building process was so extensive that it could have lasted on and off for anywhere from 1500 to 7000 years.

The Mystery
Stonehenge has become renowned for puzzling even the most brilliant researchers, and over the years the many gaps in the history of its construction, the nature of its use, and the true identity of its builders have become known as The Mystery of Stonehenge. The Neolithic people who built the monument left behind no written records, so scientists can only base their theories on the meager evidence that exists at the site. This has led to wild speculation that the monument was left by aliens, or that it was built by some eons-old society of technologically advanced super-humans. All craziness aside, the most common explanation remains that Stonehenge served as some kind of graveyard monument that played a role in the builders version of the afterlife, a claim that is backed up by its proximity to several hundred burial mounds. Yet another theory suggests that the site was a place for spiritual healing and the worship of long dead ancestors.