The Lea Valley has won several Green Flag Awards both inside and outside the regional park boundary.
There are now flags from Wardown Park near the River Lea source to Bow Creek Ecology Park.
In between Rye House, Waltham Abbey Gardens, Tottenham Marshes, Walthamstow Marsh, Hackney Marshes and Millfields are among the winners.
Also included is Cedars Park, the former Theobalds royal residence, near Waltham Cross.
The Green Flag Awards, begun twenty years ago, are administered by Keep Britain Tidy.