Thornton, located in Adams and Weld counties, is the easternmost suburb in the north Denver area. The city features several developed parks and large open spaces. The three festivals held in different seasons of the year are the main highlights of Thornton. Thorntonfest that takes place in May includes a car show, canine disk competition and carnival rides. The Harvest Fest held in September commemorates the spirit of fellowship amongst the locals and businesses. The December festival ushers in the holidays with an ice-skating rink and fireworks display.