Built as part of the original development of Castle Pines North in the 1980's, The Retreat Park features 5 acres with the following areas:
- Large playground area with picnic areas and a covered shelter
- Playground with a covered picnic pavilion & BBQ grill
- Multi-purpose field (football/soccer/lacrosse/volleyball)
- Baseball practice field
- Walking trail
The park is located on Tangleoak Drive, in the Retreat neighborhood.