Fort King George was originally built in 1777 by Lord George Macartney the British Governor General of Grenada and Tobago.
Tobago fell to the French in 1781. They began reconstructing the fort which was then recaptured by the British in 1793. It was first referred to as Fort King George in 1804, named after King George III.
In 1847 a hurricane damaged or destroyed most of the buildings. However, a garrison was maintained until 1854.
Since I was there in 2000 it has been refurbished, and these days is home to the Tobago Museum. Like many others, however, I remember it mainly for the spectacular views from its high position above Scarborough.