GBMD: All Gardening Is...
I found William Kent's quote whilst visiting Beningbrough Hall last month. There was an interesting exhibition about landscape styles and designers using scenes from various National Trust gardens to illustrate them. Beningbrough's entry on the National Trust's website says:
The exhibition pairs contemporary landscape photography with portraits of 18th-century landscape designers. In partnership with the National Portrait Gallery.
If you go there you get to see that well known portrait of Capability Brown for real.
The exhibition continues until January 2013 and the Trust's partnership with the National Portrait Gallery was responsible for my recent Greetings From Yorkshire. Beningbrough also has its own blog :)