Calgary’s Historic City Hall is an architecturally significant civic building which was designated as having heritage value at the federal, provincial, and municipal levels.

Inaugurated in 1911, the building embodies the Richardsonian Romanesque style and is one of the few remaining sandstone buildings of this scale in Alberta. The rehabilitation of Old City Hall involved extensive work to the exterior and site of the historic structure, including the preservation and restoration of its load-bearing stone masonry, the replacement of its wood windows and the rehabilitation of its historic steel roof. The iconic tower was structurally stabilized, and its clock mechanism restored. The landscaping around the building was redesigned and a comprehensive exterior lighting scheme was implemented. The Calgary City Hall was designed by architect William M. Dodd in the Romanesque Revival style. The locally-quarried sandstone walls, steeply-pitched tile roof, stone-gabled dormers, central clock tower, and semi-circular arched main entrance are features characteristic of this style and together they create an imposing structure that stands as an architectural symbol of the high aspirations of the young city.