Often referred to as America's stone henge, the Georgia Guidestones are a set of monolithic structures that were erected in Georgia in March of 1980. There are five slabs, which are astronomically aligned and have 10 "new world commandments" carved into their surface in several languages. An additional stone tablet, which is set in the ground a short distance to the west of the structure, provides some notes on the history and purpose of the Guidestones. The stones were commissioned by a man who's identity has never been revealed.