Kew in the country. Owned jointly by the National Trust and Kew gardens. Especially beautiful in Spring with daffodils and later the rhododendrons. Superb walks. Great big outdoor Christmas tree at Xmas. Millennium seedbank for the science buffs.
I visited here when it first opened 15 to 20 years ago. A biodiverse garden created in an old chalk pit.
Update: things have grown luxuriantly. Lovely gardens now as well as the biomes. All beautifully kept. Very good day out but expensive. We used our BBC Gardeners World voucher to get two for one, which brought entrance fee down to acceptable level.
Detox from the hustle of Silicon Valley at Filoli, an architectural and gardening gem in Woodside. The 654-acre estate boasts a stately red-brick country house that draws inspiration from European and Asian design. Encounter opulent bed chambers, polished ballrooms, and elaborate bathrooms as you move from room to room. Outside, a well-manicured garden awaits to spoil your senses with a variety of colors and smells. A stroll along the grounds is just what you need to forget about business for a while!