The modern wing, which serves as the main section of City Hall, was built in 1990 as the headquarters of the former Regional Municipality of Ottawa-Carleton, and is located between the Cartier Square Drill Hall and the Ottawa Court House.
The modern wing was built in 1990 as the headquarters of the former Regional Municipality of Ottawa-Carleton. The modern wing is located between the Cartier Square Drill Hall. The modern wing is located between the Ottawa Court House. The modern wing serves as the main section of City Hall.