Lincoln (/ˈlɪŋkən/) is a cathedral city, a non-metropolitan district, and the county town of Lincolnshire, England. In the 2021 Census, the Lincoln district had a population of 103,813. The 2011 census gave the urban area of Lincoln, including North Hykeham and Waddington, a population of 115,000. Roman Lindum Colonia developed from an Iron Age settlement on the River Witham. Landmarks include Lincoln Cathedral (English Gothic architecture; for over 200 years the world's tallest building) and the 11th-century Norman Lincoln Castle. The city hosts the University of Lincoln, Bishop Grosseteste University, Lincoln City FC and Lincoln United FC. Lincoln is the largest settlement in Lincolnshire, with the towns of Grimsby second largest and Scunthorpe third.