Here is how Lonely Planet describes this unusual place:
Galle (pronounced 'gawl' in English, and 'gaar-le' in Sinhala) is the big unmissable destination in the south. It's at once endlessly exotic, bursting with the scent of spices and salty winds, and yet also, with its wonderful collection of Dutch-colonial buildings, a town of great beauty. Classic architecture melds with a dramatic tropical setting to create a reality that is endlessly interesting.
Above all else, Galle is a city of trade and, increasingly, art. Today the historic Fort area is crammed full of little boutique shops, cafes and hotels owned by local and foreign artists, writers, photographers, designers and poets.
Built by the Dutch, beginning in 1663, the 36-hectare Fort occupies most of a promontory that's surrounded on three sides by the ocean. Just wandering the old walls and streets at random yields one architectural surprise after another as you explore the amazing collection of structures dating back through the centuries. Its glories have earned the Fort status as a Unesco World Heritage Site.
A key part of the Fort’s allure, however, is that it isn’t just a pretty place. Rather, it remains a working community: there are administrative offices, courts, export companies, lots of regular folks populating the streets and a definite buzz of energy in the air.