National Arts Centre
Designed by Fred Lebensold, the National Arts Centre (NAC) opened in 1969, offering state-of-the-art performing spaces and technology in its main venues, especially Southam Hall. Its acoustics and overall design, including its integration into the urban setting, dramatic succession of interior spaces, and incorporation of contemporary works of art, make it an outstanding performing arts centre. Hailed as an important national institution by former Prime Minister Lester B. Pearson, the NAC exemplifies the positive impact of federal support on the performing arts in the second half of the 20th century.
Plaque via Alan L. Brown's site Ontario Plaques. Full page here.