A large area of marshy land west of Westminster, south of St James’ Park, which included plague pits. Much more at British History Online.
It takes up several pieces of the south west corner of the Rocque map, such as this one
The overlays that highlight 17th century London features are approximate and derived from Wenceslaus Hollar’s maps:
Open location in Google Maps: 51.492874, -0.135269
"Westminster. (SW1) Built on the site of Tothill Fields, where, in the year 1793, there was a famous beargarden. "Taketh name of a hill near it, which is called Toote-hill, in the great field near the street," says an early topographer. The name of "Tot" is the old British word teut, the German Tuesco, god of wayfarers and merchants. The third day of the week is still named after him. Sacred stones were set upon heights, hence named Tot-hills. Edmund Burke resided here; also Southern, the dramatic poet. Betterton, the actor, was born here in 1635."
It still be fields 70 years later.
For extensive history see…
Chart showing the number of references in each month of the diary’s entries.