8. Bronx Park
Bronx Park, at 718 acres, has a lot of gems within. The Bronx River flows through it, there are two lakes, and the New York Botanical Garden and Bronx Zoo are within it (although both are currently closed for coronavirus). The northern part of Bronx Park is also a Forever Wild Preserve.
There are also a lot of recreational options, including hiking, kayaking, sports fields, and more (check NYC Parks to see what is still open).