Galle Fort's coral-mixed walls and ramparts, if they could talk, would have many tales to talk about the fort's long and eventful history. If you want to see everything that Galle Fort has to offer, take the "Fort Walk" from the medieval Clock Tower, through the Main Gate, through the Dutch Reform Church, and out to the western quarter, where you'll find the renovated Dutch Hospital.
You can watch locals play cricket, dine at the many delicious street food stalls, and cool yourself in any of the numerous bars located within the fort as you make your way through. The sun in Galle is notoriously harsh, therefore it's preferable to do the trek either very early in the day or in the late afternoon when temperatures are more bearable.