By the late 1880s, the air quality in Denver had pushed the population to the outskirts of town and improvements in transportation such as cable cars made the eastern sections of the Capitol Hill neighborhood more accessible to the middle class.
With the growing population and expanding middle class, Congress Park was platted into more than ten subdivisions between 1887 and 1888 and on March 11, 1889 the area was incorporated into Denver.
"[3] The park contains eight tennis courts, several athletic fields, a children's playground, a picnic pavilion, and one of Denver's public outdoor swimming pools.
[citation needed] The Denver Botanic Gardens is located on the west side of York St in Cheesman Park.
The Communications Center of the City and County of Denver is located at 950 Josephine Street, in the north end of Congress Park, and is easily seen because of its tall antenna.