- Home City Guide Landmarks Whiskytrail Hotels Links Named the Granite City' or Silver City because of its preponderance of sparkling granite buildings - is Scotland's third largest city with a population of around 210, 000. As the centre of the North Sea energy industry, it is also known as the Oil Capital of Europe . It also has been dubbed as Britain's Flower Capital because it has won ...www.aberdeentoday.co.uk