Yeah, ch. 17 was tough, for there was no descriptor for Westgate Buildings, so I had to life a clue from the map itself. Glad you're enjoying these - isn't this a great resource?

Ch. 13 Which town is on the river Parret?

Crewkherne

Ch. 14 Where are the fisheries sure to provide amusement to spectators?

Charmouth

Ch. 15 What location is so high that it looks like an aerie, but whose elevation saves one from the troublesome diseases of the indolence who travel to the Pump Room on foot?

Lansdown Crescent

Ch. 16 Which architectural beauty terminates at Sydney Gardens?

Laura-place

Ch. 17 Which residences are opposite the Chandois Buildings?

Westgate Buildings

Ch. 18 Where have fossilized shells embedded in tree roots been found?