Karnak is a building complex in Luxor, Egypt. The name of this complex is Karnak Temple Complex. It has a large variety of decayed temples, pylons, chapels and other buildings. The archeologists believe that it is the second largest ancient religious site in the world. The Karnak complex contributed to the name of the surrounding nearby modern village of El-Karnak which is just two and a half kilometer north of Luxor. Main construction of the building began during the reign of Senusret I in the middle kingdom, although many of the exterior buildings actually date from the New Kingdom.