They are the benchmark for public parks and green spaces across the country.
And three beauty spots in north Norfolk have received their Green Flags.
Sadler's Wood, near North Walsham, has re-joined Holt Country Park and Pretty Corner Woods, near Sheringham, in being recognised by the Green Flag Award Scheme.
Holt Country Park has held its position for 14 years and was joined by Pretty Corner Woods in 2013.
Sadler's Wood first received the accolade in 2012 and, despite just missing out last year, it has re-claimed its place.
Virginia Gay, North Norfolk District Council's portfolio holder for culture and wellbeing, said: "Our woodlands and green spaces mean so much to everyone and these awards celebrate the dedication that goes into maintaining them to such a high standard."
The international award, organised by Keep Britain Tidy, rewards the best parks and green spaces across the country.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here