It includes paths that encircle the island, along with gardens and picnic sites.
The island also was the location of a blast shelter built in secret for President John F. Kennedy shortly after his 1960 election.
Kennedy often spent winters in nearby Palm Beach, Florida.
The shelter, Detachment Hotel, was open for tours for several years, but was closed in October 2017.
This article about a location in Palm Beach County, Florida is a stub.