Hackfall garden was recognised for the £1m Heritage Lottery Fund (HLF) backed restoration. The five-year programme of work saw ponds, pathways, cascades, weirs and follies restored by a team of landscape architects, ecologists and hydrologists.
Woodland Trust officer Paul Mosley said:
"To receive such high profile recognition for the work that has taken place at Hackfall is rewarding for all the parties involved. We're grateful to all the funders, professionals and volunteers that have given their time and money to turn Hackfall into something truly special."