Extract the answer to the question from the following context.
Question: What was the first Michigan state park to open in the city?
Context: The Detroit International Riverfront includes a partially completed three-and-one-half mile riverfront promenade with a combination of parks, residential buildings, and commercial areas. It extends from Hart Plaza to the MacArthur Bridge accessing Belle Isle Park (the largest island park in a U.S. city). The riverfront includes Tri-Centennial State Park and Harbor, Michigan's first urban state park. The second phase is a two-mile (3 km) extension from Hart Plaza to the Ambassador Bridge for a total of five miles (8 km) of parkway from bridge to bridge. Civic planners envision that the pedestrian parks will stimulate residential redevelopment of riverfront properties condemned under eminent domain.
Tri-Centennial State Park and Harbor
In the context, The Detroit International Riverfront includes a partially completed three-and-one-half mile riverfront promenade with a combination of parks... It also mentions Tri-Centennial State Park and Harbor. This park is mentioned as Michigan's first urban state park in the same paragraph so it can be inferred that this was the first one to open within city limits.
So, answer is: Tri Centennial State Park and Harbor.