What is the main industry of the town that has a ruined L-plan keep in an ancient Scottish village?
Prestonpans: Prestonpans is a small fishing town situated to the east of Edinburgh, Scotland, in the unitary council area of East Lothian. Prestonpans:  The town boasts some impressive examples of historical architecture, such as the Preston Tower and the doocot and the local Mercat Cross, which is the only one of its kind in Scotland which remains in its original form and location. Preston Tower: Preston Tower is a ruined L-plan keep in the ancient Scottish village of Prestonpans.
fishing