We're loving the green transformation the Battersea Power Station has recently made. It's brand new riverside pop-up park (situated in front of the Grade II-listed industrial masterpiece) is hosting all sorts of alfresco happenings, including this season of outdoor exercise classes. You don't need to sign up for a course, or commit to membership, just turn up with a towel (and a tenner) and enjoy dance, combat, body conditioning, strength training, cardio, yoga and Pilates classes – all set to a lively soundtrack. The hour-long classes take place throughout the day on Saturdays and Sundays between 11am and 5pm. See www.movepopupgym.com for times and to book a session.