Mentioned by standard.co.uk
The best things to do in London for free
"When a park is home to a few Princes and a Duchess or two, you know it’s going to be good. As well as green spaces abundant enough to dodge the crowds, you’ll find historic monuments to explore, fountains to both splash about in and admire, myriad art installations, and free exhibitions at the Serpentine Gallery a short walk away from its namesake lake. Now that’s a walk in the park."