A tribute to the 1997 classic GoldenEye 007 developed by Rare Ltd. for the Nintendo 64.
Was lighting done before texturing? Strange, it has some textures in picture.
Development systems could view maps without textures - the official GoldenEye 007 site also had a NinGen shot of Streets with a similar textureless view. Lighting and some vertex colour should be all that is displayed in the Bunker map. As Karl Hilton explained in Retro Gamer - Issue 38, "A lot of GoldenEye is in black and white. RGB colour textures cost a lot more in terms of processing power. You could do double the resolution if you used grayscale, so a lot was done like that. If I needed a bit of colour, I'd add it in the vertex."
Outside is missing too.