 The McLaughlin Planetarium is a former working planetarium whose building occupies a space immediately to the south of the Royal Ontario Museum in Toronto , at 100 Queen 's Park . Founded by a grant from philanthropist Colonel R. Samuel McLaughlin , the facility was opened to the public on October 26 , 1968 . It had , for its time , a state @-@ of @-@ the @-@ art electro @-@ mechanical Zeiss planetarium projector that was used to project regular themed shows about the stars , planets , and cosmology for visitors . By the 1980s the planetarium 's sound @-@ system and domed ceiling were used to display dazzling music @-@ themed laser @-@ light shows . The lower levels of the planetarium contained a gallery called the " Astrocentre " that featured space @-@ related exhibits , related artifacts on the history of astronomy and was also home of the world 's first commercial Stellarium 
