With more than 2,000 public votes the Old Station at Tintern in Monmouthshire took the top spot as the 2011 People's Choice winner.
Warley Woods in Sandwell, West Midlands and Cassiobury Park in Watford took second and third places respectively.
For the first time three university campuses were voted among the public's top ten favorite open spaces in the annual competition which sees all Green Flag award winning parks and green spaces entered into the poll. Reading University's Whiteknights Campus and Harcourt Hill and Headington at Oxford Brookes University came fourth, sixth and ninth respectively.
Green Flag Award scheme manager Paul Todd said: "It's great to see such a diverse range of sites in the top ten. It's sign of their importance to the public no matter where they are."
Victoria Park in Tower Hamlets was voted the London People's Choice favorite while special innovation awards went to Mile End Park in Tower Hamlets, Bromley Palace Park for the Thyme Out Project and Croydon Cemetery with Croydon Bereavement Services and The Shaw Trust.
Meanwhile the London Green Spaces Friends Groups Network received the Green Flag special achievement award.
Accepting on the network's behalf chairman Dave Morris praised the commitment of London's friends groups and urged the Government to provide greater funding for parks resources.
"Parks are suffering under Government cuts but they are unnecessary because we are a wealthy country. We have to make sure adequate resources go into services like this so we can continue to use them and be proud of them," he said.
See the full list of winners here.