Aberdeen is Scotland's third most populous city, one of Scotland's 32 local government council areas and the United Kingdom's 37th most populous built-up area, with an official population estimate of 196,670 for the city of Aberdeen itself and 228,990 for the local authority area.
Nicknames include the Granite City, the Grey City and the Silver City with the Golden Sands. During the mid-18th to mid-20th centuries, Aberdeen's buildings incorporated locally quarried grey granite, which can sparkle like silver because of its high mica content. Since the discovery of North Sea oil in the 1970s, other nicknames have been the Oil Capital of Europe or the Energy Capital of Europe. The area around Aberdeen has been settled since at least 8,000 years ago, when prehistoric villages lay around the mouths of the rivers Dee and Don. The city has a long, sandy coastline and a marine climate, the latter resulting in chilly summers and mild winters.