Colt Park (1905) The 114 acre park was established from the former Armsmear Estate of Samuel Colt and Elizabeth Jarvis Colt, which was gifted to the city upon Elizabeth’s death in 1905. Today the park is home to playscapes, a swimming pool and splash pads, sports fields, Dillon Stadium and historical buildings. Colt Park was listed on the National Register of Historic Places on June 8, 1976.