Question: Which Grade I listed building in Dorset, England was designed by the same designer as Blenheim Palace and Castle Howard? 
Sentence (from "John Vanbrugh"): Sir John Vanbrugh ( ; 24 January 1664 (baptised) – 26 March 1726) was an English architect and dramatist, perhaps best known as the designer of Blenheim Palace and Castle Howard.
Relevant evidence: Yes