Gila Highlands is the ritziest residential area in New Angeles. It overlooks the Old War Memorial. In Kate McCaffrey's introductory story, Gila Highlands is described as a mile-high arcology.
It is probably the same place depicted on the Android: Netrunner card Gila Hands Arcology.
"Show them how much they want to be rich and they'll convince themselves that, someday, they will be."