William G. Milliken State Park and Harbor

William G. Milliken State Park
and Harbor
View of the harbor and lighthouse (October 2017)
Location in Michigan
William G. Milliken State Park and Harbor (the United States)
LocationDetroit International Riverfront, Detroit, Michigan
Coordinates42°19′55″N 83°01′31″W / 42.33194°N 83.02528°W / 42.33194; -83.02528
Area31 acres (13 ha)
Elevation584 feet (178 m)
Established2004 (renamed in 2009)
Administered byMichigan Department of Natural Resources
DesignationMichigan state park
Named for:Governor William Milliken
WebsiteOfficial website

The William G. Milliken State Park and Harbor (formerly named Tri-Centennial State Park and Harbor) is a public recreation area located on the Detroit River just east of downtown Detroit, Michigan, on a portion of the city's International Riverfront. The state park's 31 acres (13 ha) include wetlands, paved trails, and a 52-slip harbor of refuge. A 63-foot (19 m) conical brick lighthouse tower, designed as a scaled-down replica of the Tawas Point Light, marks the harbor entrance.