It's common knowledge that spending a few hours surrounded by trees and plants can increase your energy levels. If roaming around town has tired you out, Parco di Villa Glori is a perfect place to stop and recharge your batteries.
Situated in Parioli, this recreation and green space is well worth including on your itinerary. But you'll find tons more to see and do in this area. St. Peter's Basilica, Roman Forum, and Piazza Navona aren't too far away from Parco di Villa Glori.