The Gate of Sun is constructed by Tiwanaku culture of Bolivia more than 1500 years ago. The Gate of Sun is a megalithic solid stone arch located near Lake Titicaca near La Paz, Bolivia. The Gate of Sun is almost 9.8ft tall and 13 ft wide and constructed single piece of stone. The Gate of Sun is rediscovered by European Explorers in the mid of 19th century. Megalith was lying horizontally and had a massive crack going through it and weight is more than 10 tons. The Gate of Sun is still stands in the same situation where it was found.
Somehow, many people believed that is not original location which remains uncertain. However, few elements of Tiwanaku iconography spread throughout Peru and parts of Bolivia. Moreover, different modern interpretations of the secretive inscriptions have been found on the object the engravings that adorn the gate are thought to possess astronomical and/or astrological implication and may have used for calendrical purpose connotations and look like human-like beings with wings and curled-up tails, and appear to be wearing rectangular “helmets”, though interpretations differ.
Furthermore, various people believe that Gate of Sun was used as a calendar, called it “The Calendar Gate” reflects a solar year. It wasn’t fit into the solar year, because calendar year has 290 days as off now by dividing into 12 months of 24 days each. However, other theories suggest it was used as a portal to another dimension may be the mysterious land. So, it is believed Tiahuanaco as the place of creation and important place to visit. Source: Charismatic Planet