[citation needed] The original Olympic Plaza Station was initially named 1 Street E. It was renamed Olympic Plaza in late 1987[citation needed] in preparation for the opening of its namesake park adjacent to the station in 1988.

On June 6, 2011, both City Hall platforms opened and Olympic Plaza was permanently closed and demolished shortly thereafter.

[1] The Westbound platform (North side of 7 Avenue; adjacent to the Library) was completely finished as of June 6, 2011, and remained open.

[4][5][6] On September 19 2023, Calgary Transit announced the station would rename to City Hall/Bow Valley College to simplify the commute for students and staff and better reflect the area.

[8] With these combined, the modern City Hall station would've had an average weekday ridership of 24,900 in the year of 2007.