Editing Line 1 Yonge–University (section)

=== Stations ===
{{see also|List of Toronto subway stations|Toronto subway public art}}
[[File:Eglinton Station Vitrolite.jpg|left|thumb|[[Eglinton station]]'s Vitrolite-tiled walls are the last such station wall treatment left in the system.]]
The original design of the oldest stations in the subway system, which are on the Yonge line (from Union to Eglinton stations), are mainly utilitarian and characterized by [[Pigmented structural glass|vitreous marble]] wall tiles and the use of the [[Toronto Subway (typeface)|Toronto Subway typeface]] for station names. Eglinton Station is the only station to retain this wall treatment, though Queen Station retains a narrow band of original blue Vitrolite tiles near the ceiling at platform level.

The design of the stations on the University line was mainly utilitarian and this style (sometimes referred to as "bathroom modern") was later used for Line 2 Bloor–Danforth as well. {{stl|TTC|Queen's Park}} and {{stl|TTC|St. Patrick}} stations have circular and semi-circular cross-sections because they are constructed in bored tunnels. Museum station was renovated in the late 2000s to have columns that resemble artifacts found in the nearby [[Royal Ontario Museum]].

{{stl|TTC|Lawrence}}, {{stl|TTC|Sheppard–Yonge}} (formerly Sheppard), and [[Finch station]]s are similar to each other in design, but have different colour schemes: Lawrence is red and cream, Sheppard is yellow and dark blue, and Finch is light grey, medium grey, and dark grey. [[York Mills station]] formerly followed the same design scheme—in light green and dark green—until it was renovated.

The section of the line between Spadina and Wilson stations (formerly the Spadina segment) opened in 1978 has art and architecture that is unique for each station, such as flower murals in [[Dupont station]] or streetcar murals in [[Eglinton West station]]. The art originally installed at {{stl|TTC|Glencairn}} and {{stl|TTC|Yorkdale}} stations had been removed, as the former's art had faded in sunlight and the latter was too costly to operate. Since late 2017, work is underway to restore the art in both stations, with Glencairn's being fully re-installed in 2020, albeit modernized.

[[North York Centre station]] is an [[infill station]]. Its design is different from the other stations in the original North Yonge extension. [[Sheppard West station]], which was opened in 1996 as Downsview station, has art and architecture that is different from the stations built earlier along its western portion of the line.

Stations on the 2017 extension from Sheppard West north to Vaughan Metropolitan Centre, in keeping with the pattern of the original Spadina line, also feature public art and architecture from notable creators. However, the platform walls have no tiles or other cladding and are simply bare concrete, though structural elements on the platforms themselves are clad, as is the case with much of the Line 4 Sheppard stations.