Dendera is a small Upper Egyptian town located about 70 kilometers north of Luxor. The main attraction of the temple complex of Dendera is the Hathor Temple, perhaps the best-preserved temple in Upper Egypt. The entire complex covers around 40,000 m² and is surrounded by a mighty mud-brick wall. The current Hathor Temple dates from 54 BC, from the Ptolemaic dynasty, and was completed by the Roman Emperor Tiberius. However, the temple rests on the foundations of earlier buildings dating back to at least the reign of Pharaoh Cheops (known as the builder of the Great Pyramid of Giza). In addition to the Hathor Temple, the site also contains Roman and pharaonic mammisi (birth houses), the ruins of a Coptic church and a small chapel dedicated to the goddess Isis from the Roman or Ptolemaic era.