Luxor, site of ancient Thebes, and the "world's greatest open air museum". Notable sights on the east bank include the Temple of Karnak and Luxor Temple. On the west bank is the spectacular Valley of the Kings. For a period of nearly 500 years from the 16th to 11th century BC, tombs were constructed for the kings and powerful nobles, including Tutankhamun. The nearby Valley of the Queens is said to hold more than seventy tombs.