The Karnak temple complex, universally known only as Karnak, describes a vast conglomeration of ruined temples, chapels, pylons and other buildings. It is located near Luxor in Egypt. This was ancient Egyptian Ipet-isut ("The Most Selected of Places"), the main place of worship of the Theban Triad with Amun as its head, in the monumental city of Thebes. The complex retrieves its current name from the nearby and partly surrounding modern village of el-Karnak, some 2.5km north of Luxor.
The key difference between Karnak and most of the other temples and sites in Egypt is the length of time over which it was developed and used. Construction work began in the 16th century BC. Approximately thirty pharaohs contributed to the buildings, enabling it to reach a size, complexity, and diversity not seen elsewhere. Few of the individual features of Karnak are unique, but the size and number of features are overwhelming. Construction of temples started in the Middle Kingdom and continued through to Ptolemaic times.
The history of the Karnak complex is largely the history of Thebes. The city does not appear to have been of any significance before the Eleventh Dynasty, and any temple building here would have been relatively small and unimportant, with any shrines being dedicated to the early god of Thebes, Montu. The earliest artifact found in the area of the temple is a small, eight-side from the Eleventh Dynasty, which mentions Amun-Re.
Major construction work in the Precinct of Amun-Re took place during the Eighteenth dynasty. Thutmose I erected an enclosure wall connecting the Fourth and Fifth pylons, which comprise the earliest part of the temple still standing in situ. Construction of the Hypostyle Hall may have also began during the eighteenth dynasty, though most building was undertaken under Seti I and Ramesses II. Merenptah commemorated his victories over the Sea Peoples on the walls of the Cachette Court, the start of the processional route to the Luxor Temple.
The last major change to Precinct of Amun-Re's layout was the addition of the first pylon and the massive enclosure walls that surround the whole Precinct, both constructed by Nectanebo I.
In 323 AD, Constantine the Great recognised the Christian religion, and in 356 ordered the closing of pagan temples throughout the empire. Karnak was by this time mostly abandoned, and Christian churches were founded amongst the ruins, the most famous example of this is the reuse of the Festival Hall of Thutmose III's central hall, were painted decorations of saints and Coptic inscriptions can still be seen.