The entire Town of St. George is designated a UNESCO world heritage site which means there is a lot of history to appreciate around the area.
Town Hall in St. George
When you get to Kings Square (the main square in St. George) why not step back in time and enter the Town Hall? It dates back to 1782 and you can see portraits of various Mayors of the town decorating the walls.
Fun Fact: The civic government continues to meet here!
Feel free to walk around, pose for pictures (too bad they don't keep powdered wigs on hand), and check things out. It won't take you all that long, as you can see above. Still, check it out.