Costello Park is located at 99 Adams Street in Manassas Park. The park is reserved for Manassas Park residents only and visitors may be required to show proof of residency. There are two softball fields and five baseball fields, but no tables or chairs. Those items have to be rented from the city's parks and recreation officials.
- Fax: 703-335-9045
- Handicap Accessible: Yes
- Features: Athletic fields, Grills