St. Clair West, designed by the TTC's in-house architects, is a colourful station featuring a wide variety of interior finishes such as ceramic tiles, brick and sculptural concrete surfaces. Backlit orange panels and an abstract tile pattern resembling a barcode at platform level distinguish the station from others in the system. The TTC built its first underground streetcar loop at this station circling an exceptionally spacious waiting area for connections to surface routes. Buskers often take advantage of the acoustics caused by the station's open architecture. Wilson is the one other station on the line which, due to its complexity, the TTC chose to design themselves.