For serious hiking or relaxing meditative strolls within the city of Phoenix, this is my preferred mountain park. Trails of varying degrees of difficulty can be found here, from those with relatively steep portions for a good leg workout, to scenic, (mostly) no-incline trails that wind within the valley between the mountains and offer great Sonoran desert scenery and relative solitude. I usually park at the visitor center area at 7th street near Thunderbird because that area never runs out of parking spaces, and you encounter less crowds in that part of the mountain park.