The Karnak Temple Complex, commonly known as Karnak (ˈkɑr.næk), comprises a vast mix of temples, pylons, chapels, and other buildings near Luxor, Egypt. Construction at the complex began during the reign of Senusret I (reigned 1971–1926 BCE) in the Middle Kingdom (2000–1700 BCE) and continued into the Ptolemaic Kingdom (305–30 BCE), although most of the extant buildings date from the New Kingdom. The area around Karnak was the ancient Egyptian Ipet-isut ("The Most Selected of Places") and the main place of worship of the 18th Dynastic Theban Triad, with the god Amun as its head. It is part of the monumental city of Thebes, and in 1979 it was added to the UNESCO World Heritage List along with the rest of the city. The Karnak complex gives its name to the nearby, and partly surrounded, modern village of El-Karnak, north of Luxor.
The original name of the temple was Nesut-Towi, meaning "Throne of the Two Lands". Other names included Ipet-Iset, meaning "The Finest of Seats", as well as Ipt-Swt, meaning "Selected Spot", or Ipetsut, meaning "The Most Select of Places".
Some believe that the modern name of Karnak is derived from خورنق Khurnaq meaning "fortified village". However, this speculation is not supported by any historical evidence.
The complex is a vast open site and includes the Karnak Open Air Museum. It is believed to be the second most visited historical site in Egypt; only the Giza pyramid complex near Cairo receives more visits. It consists of four main parts, of which only the largest is currently open to the public. The term Karnak often is understood as being the Precinct of Amun-Re only, because this is the only part most visitors see. The three other parts, the Precinct of Mut, the Precinct of Montu, and the dismantled Temple of Amenhotep IV, are closed to the public. There also are a few smaller temples and sanctuaries connecting the Precinct of Mut, the Precinct of Amun-Re, and the Luxor Temple. The Precinct of Mut is very ancient, being dedicated to an Earth and creation deity, but not yet restored.