Gobekli Tepe is an archaeological site located in southeastern Turkey, near the city of Sanliurfa. The site was discovered in the 1960s but was not excavated until the 1990s. It is considered one of the most important archaeological discoveries of the 21st century, as it has significantly changed our understanding of the Neolithic period and the origins of civilization.

Gobekli Tepe dates back to the 10th millennium BCE and is believed to be the oldest known temple complex in the world. The site consists of multiple circular structures, or "enclosures," that are decorated with elaborate carvings and reliefs of animals, humans, and abstract symbols. The enclosures are arranged around two central pillars that stand up to 6 meters high and weigh up to 10 tons.

The discovery of Gobekli Tepe challenges traditional assumptions about the Neolithic period, which was previously thought to be a time when humans were living in small, primitive communities. The complexity and sophistication of the site's architecture, carvings, and symbolism suggest that the people who built it were capable of organizing large-scale construction projects and had a highly developed system of beliefs and rituals.

The purpose of Gobekli Tepe is still largely unknown, but it is believed to have been a religious or ceremonial center. The site was likely abandoned around 8000 BCE and was eventually covered by sediment and forgotten. It was rediscovered in the 20th century and has been the subject of ongoing excavation and research ever since. Today, Gobekli Tepe is a UNESCO World Heritage Site and a popular tourist destination.