Designed in 1905 by E.J. Lennox, the celebrated architect behind Casa Loma and Toronto's Old City Hall, McGrath Hall began its life as the Bank of Toronto and remains one of Yonge Street's most commanding neoclassical landmarks. Modelled after the Roman Pantheon, the four-storey structure presents a monumental Indiana limestone facade defined by three-storey Corinthian columns, a pedimented portico, and a striking hemispherical dome.
Inside, the grand banking hall preserves its original marble floors, terrazzo detailing, and stained glass skylights, an interior that speaks directly to the ambition of pre-war Toronto. Designated under the Ontario Heritage Act in 1975 and protected by an Ontario Heritage Trust conservation easement since 1999, McGrath Hall stands as one of the few surviving pre-war bank buildings on Yonge Street and a defining presence within the historic theatre block.