The Ontario Science Centre occupies a site overlooking the Don Valley, about 10 km north-east of the conurbation centre. Designed by the virtuoso architect Raymond Moriyama this tremlopments in e.g. laser technology, telecommunications, optics, biology, atomic physics, space travel and mendously modern building was completed in 1969. Visitors to the Centre are brought face to face with the latest deveeteorology, all presented in an absorbing and imaginative way. The emphasis is very much on visitor participation, with many inter-active displays and widespread use of suitably installed computing and other equipment. The Ontario Science Centre is family oriented with many interesting exhibits to entertain children.