Roundwood Green Space is tucked away behind Roundwood Lane and next to Harpenden Rise allotments. It offers a play area, sloping grass picnic area with benches and two raised beds, wildlife hedgerows and mature trees along the park boundaries.

Following the Town Council's acquisition of Roundwood green space in 2022, the play area required considerable renovation as the previous equipment was tired and outdated. Designers focused on exciting and diverse play equipment suitable for children of 6 months – 12 years old, accessibility with improved pathways and increased picnic and bench seating areas (including a bench outside the playground boundary for dog walkers).

No toilet facilities.