Deir el-Bahari or Dayr al-Bahri (Arabic: الدير البحري ad-dayr al-baḥrī, i.e. "Monastery of the Sea") is a complex of mortuary temples and tombs located on the west bank of the Nile, opposite the city of Luxor, Egypt. This is a part of the Theban Necropolis.
The first monument built at the site was the mortuary temple of Mentuhotep II of the Eleventh dynasty. It was constructed during the 15th century BC.
During the Eighteenth dynasty, Amenhotep I and Hatshepsut also built extensively at the site.
Mentuhotep II, Eleventh Dynasty king who reunited Egypt at the beginning of the Middle Kingdom, built a very unusual funerary complex. His mortuary temple was built on several levels in the great bay at Deir el-Bahari. It was approached by a 16-metre-wide (150-ft) causeway leading from a valley temple which no longer exists.
The mortuary temple itself consists of a forecourt and entrance gate, enclosed by walls on three sides, and a terrace on which stands a large square structure that may represent the primeval mound that arose from the waters of chaos. As the temple faces east, the structure is likely to be connected with the sun cult of Rê and the resurrection of the king.
From the eastern part of the forecourt, an opening called the Bab el-Hosan ('Gate of the Horseman') leads to an underground passage and an unfinished tomb or cenotaph containing a seated statue of the king. On the western side, tamarisk and sycamore trees were planted beside the ramp leading up to the terrace. At the back of the forecourt and terrace are colonnades decorated in relief with boat processions, hunts, and scenes showing the king's military achievements.