From the site of the station: "A number of architects collaborated on the new Union Station design: the Montreal Firm of G.A. Ross and R.H. Macdonald, Hugh Jones of the CPR and John M. Lyle of Toronto.
Designed in the Beaux-Arts style, it was the largest and most opulent station erected in Canada. Monumental in design, the great Hall features a coffered vault ceiling of Gustavino tiles. The shape of the ceiling is echoed in the four-storey, barrel-vaulted windows on the east and west walls. Mid-way up the north and south walls are carved names of the cities that were then serviced by the CPR and the Canadian National Railways (CNR), the government-owned railway that replaced the Grand Trunk. The list alternates from side to side, naming the cities from east to west.
The interior walls are of Zumbro stone from Missouri; the floors are Tennessee marble, laid in a herringbone pattern. The exterior walls of the station are Indiana and Queenston limestone. Each of the 22 Bedford limestone columns weights 75 tons and is 40 feet high."
