Named after General Ayub Khan, the first of Pakistan's martial law administrators, the rather staid Ayub National Park south of the Cantonment has 900 hectares of paths, gardens and lakes (with hire boats). To get here, take an airport-bound Suzuki from Rawalpindi and get off at Kucheri Chowk, then take the right fork and travel for about 1km.
Ayub National Park
Islamabad & Rawalpindi