It is located at Ossington Avenue just north of Bloor Street West and opened in 1966 as part of the original segment of the subway line.

The main station entrance is on the west side of Ossington Avenue, just north of Bloor.

There is a second automatic entrance, with entry only by Presto card, on Delaware Avenue, beside a TTC electrical substation.

[3] The artwork uses 800 stick-on coloured acrylic tiles arranged in clusters near stairways on the platform and mezzanine levels.

[4] Plaques in the station provide an artist's message: "The Particles inhabit the tile grid of Ossington Station to tell a story of the natural and human history of this site, mapping the local Garrison Creek watershed and recalling the ancient landscape and geology of this neighborhood.