What: It’s a no-brainer why this strategic hilltop location with a commanding view of the Halifax harbour was chosen for the fort destined to protect the city. Make like a soldier at the Halifax Citadel National Historic Site We check out the 10 best things to do in this former rough-and-ready garrison town located on the shores of the world’s second-largest natural harbour. It’s all about the citadel-crowned hill, top-notch museums, excellent shopping, fabulous dining and stunning seascapes in Nova Scotia’s hip and profoundly historic capital of Halifax.