The city of Portland, Oregon, has more than of public parks and other natural areas,
Portland is home to one of the largest municipal parks in the United States, Forest Park, as well as the world's smallest parkâÂÂat in diameterâÂÂMill Ends Park.
The development of Portland's park system was largely guided by the 1903 Olmsted Portland park plan. There are at least 279 parks and natural areas in Portland. Most of these are operated by Portland Parks & Recreation, though the State of Oregon, Metro regional government, the Portland Water Bureau, and the Federal Government also operate parks as well.
The Portland Water Bureau operates various "HydroParks" on land that is owned by the bureau.
The Metro regional government operates 20 parks, 4 of which are located in Portland.
Oregon Parks and Recreation Department, or Oregon State Parks, operates over 250 State parks. One of these is located in Portland.