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 began to take shape, Lookout Mountain became an obvious choice for the city's attention, with Mayor Robert W. Speer playing a key role, having previously been involved in the early stages of Lookout Mountain Park. In 1917, a portion of what was once Lookout Mountain Park was acquired by Denver, leading to its rebranding as the new Lookout Mountain Park for the city.