Thebes was a city in Egypt not particularly close to Giza and the Great Pyramid. (AUDIO: The Eye of the Scorpion [+]Iain McLaughlin, Main Range (Big Finish Productions, 2001).) It was Erimem's home town, and a place where the Fifth Doctor and Peri spent some time. (PROSE: Graham Dilley Saves the World [+]Iain McLaughlin and Claire Bartlett, Short Trips: Past Tense (Short Trips, 2004).)
Pythagoras travelled to Thebes, and was the only foreigner granted the privilege of taking part in the priests' worship. (PROSE: The Pythagoras Problem [+]Error: Code 2 - no data stored in variables, cache or SMW.)