4,000 Houses for 4,000 Followers: No 1:

Holkham Hall, Norfolk, England. 

Built in the Palladian style by William Kent, 1734-64. 

I went out with General Hamilton on Saturday the 21st, and stayed till Sunday evening. There was a furious and dreadful storm on Saturday night. It blew almost a hurricane. His house stands high and was very much exposed, and I am certain that in the second story, where I slept, it rocked like a cradle. He never appeared before so friendly and amiable. I was alone, and he treated me with a minute attention that I did not suppose he knew how to bestow. His manners were also very delicate and chaste. His daughter, who is nineteen years old, has a very uncommon simplicity and modesty of deportment, and he appeared in his domestic state the plain, modest, and affectionate father and husband.
—  Judge James Kent to his Wife- April 26, 1804 (via Memoirs and Letters of James Kent, pg 143)

Chiswick House, London, built 1729.

Chiswick House was designed by its owner, the 3rd Earl of Burlington, together with the architect William Kent, who also laid out the gardens. It was intended as an architectural showpiece and a venue for parties and entertainments, rather than as a permanent habitation.

The house and gardens are fine early examples of the English Palladian style of architecture, and of the English landscape garden.