Wolseley Barracks was built in 1886-88 and was home to the Infantry School Corps. It was designed by Henry James, the first Chief Engineer of the Department of Militia and Defence. The building was renamed Wolseley Hall in 1899 and designated a national historic site in 1963.
In 1901, the Corps was renamed to the Royal Canadian Regiment and its headquarters moved here in 1923. The building was used for recruiting, training and demobilization during the First and Second World Wars. The regiment returned to the barracks in 1953.
Wolseley Barracks is one of the best examples of a structure associated with the theme of the federal government initiatives in the 19th century to create a permanent military force within Canada. "A" Block is an outstanding example of military architecture in Canada. It is a large structure, U-shaped in plan, which consists of three wings arranged around a courtyard.
The building is now the Royal Canadian Regiment Museum.