Architect: Raymond Moriyama

Conceived in 1961 as the Centennial Centre of Science and Technology by the same Progressive Conservative Provincial government under Premier John Robarts that built Ontario Place.

Expanded by addition in 1996 of the IMAX Dome theatre by Zeidler Roberts Partnership; in 2004-2006 by addition of the Weston Family Innovation Centre, the Hot Zone, the Challenge Zone, Citizen Science, and Media Studios by Diamond Schmitt Architects.

ACO, the Toronto Society of Architects and Ontario Place for All share their opposition to the Provincial government's intent to relocate the Ontario Science Centre to Ontario Place.

TSA notes: The Ontario Science Centre complex has been specifically built for its site, responding to the changing levels of the Don River ravine and forging an irreplaceable relationship between building and landscape . . . it is an important cultural institution and community resource for Flemingdon Park and Thorncliffe Park, dense neighbourhoods that have historically been underserved. [As such it] plays a vital role as a community hub and is among the few large-scale cultural institutions outside of the city centre.

Also important: the location of the Ontario Science Centre: close to the Don Valley Parkway, on the edge of the ravine of the East Don River where it will be served by the Eglinton Crosslink LRT and the northernmost station of the Ontario Line (the southernmost station of which will be Exhibition Place) inviting a complement to the Science Centre at Ontario Place (a centre for Environmental Research is one proposal) rather than the expropriation of it away from its present location.