The Heritage Building is today part of Ottawa City Hall.

It was originally built in 1874 as Ottawa Normal School and served as a teacher's college.

It was part of Ontario's normal school system of teacher's colleges that had been set up by Egerton Ryerson.

In 1986 it was purchased by the Regional Municipality of Ottawa-Carleton, to serve as part of a new RMOC headquarters.

The mayor has his office in this building, overlooking Elgin Street.