With the advent of the Denver Mountain Parks system, Lookout Mountain was quickly eyed by the city, whose efforts were led by Mayor Robert W. Speer who earlier sat on the board of Lookout Mountain Park during the early efforts. In 1917 a portion of what earlier was Lookout Mountain Park was acquired by Denver, which became the new Lookout Mountain Park for Denver.
As the Denver Mountain Parks system came into being, Lookout Mountain quickly caught the city's attention, with Mayor Robert W. Speer at the helm, having previously been involved in the early efforts of Lookout Mountain Park. In 1917, a portion of what was once Lookout Mountain Park was taken over by Denver, rebranding it as the new Lookout Mountain Park for the city.