Have you read Mortiswood? 
Here are some of the real places mentioned within the tale.
All are within Thanet, Kent, in the UK.

Margate Harbour & the Stone Pier

Cliffs at Botany Bay, Kingsgate

The sandy Botany Bay

Chalk column of Botany Bay
Old smugglers caves, Kingsgate

Northdown Park, Margate
The play area is in the middle, behind the central tree - the library
is to its left, and the cricket pavilion to its right

Northdown Park

Dell gardens, Northdown Park

One route into Northdown Park

Northdown Park in the snow, my dog enjoying the chill!
(and secretly pretending to be a Vallesm)