Rickmansworth Aquadrome, Chorleywood House Estate and Leavesden Country Park have been given awards for excellence.
The "Green Flag" is awarded in recognition of good use of green space, well-maintained facilities and high standard of safety and security.
Rickmansworth Aquadrome and Chorleywood House Estate have received the award for the fourth year running while Leavesden Country Park has picked up the award for the second time after an absence in 2011.
This year 1,400 such awards were given out in the UK.
Councillor Keith Williams, portfolio holder for leisure and community, said: "Great parks and green spaces have a huge impact on local communities, providing places to play and relax as well as bringing generations together.
"We are lucky to have so many wonderful spaces here in Three Rivers. I’d recommend a visit to any of our parks."
Run through the charity Keep Britain Tidy, all free-to-enter green spaces can apply for the award.
Paul Todd, Green Flag award scheme manager, said: "A Green Flag award provides national recognition for the achievements of all those whose hard work and dedication has helped to create these fantastic places for all to enjoy."
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 The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.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 hereComments are closed on this article