Downtown Nairobi is in the shape of a triangle. Most of the skyscrapers and major government offices are centered inside of three borders: Uhuru Highway to the west, what used to be the old United States Embassy building to the south, and the Nairobi River to the northeast. In general, the discount shops, hotels, and poorer neighborhoods are located east of the central business district; to the west are the more affluent areas. The streets in the central business district are laid out in a grid pattern. Major roads lead out of the central business district to the residential areas that encircle it.