There are many great parks in London to choose from, but Hampstead Heath is by far my favourite; a lido, Parliament Hill with a great view of the city, ponds, woods and plenty of space. It’s a great place to hang out in the summer, but also presents a lovely walk in the winter. Address: (As it’s so big obviously it doesn’t really have a specific address but there are 2 main entrances) Entrances by Gospel Oak or Hampstead Heath Entrance.
Behind Markfield Beam Engine is the River Lee which travels from the Chiltern Hills all the way to the Thames via Tottenham Hale. There is a special light along this stretch of the river possibly due to there being about 10 massive reservoirs behind the levee on the other side of the river, offering an amazing sense of space. A great place to walk, cycle and feed the ducks, swans, geese and coots.