Constitution Square is a three-tower office complex, located in downtown Ottawa

Ottawa

Ottawa is the capital of Canada, the second largest city in the Province of Ontario, and the fourth largest city in the country. The city is located on the south bank of the Ottawa River in the eastern portion of Southern Ontario...

, Ontario

Ontario

Ontario is a province of Canada, located in east-central Canada. It is Canada's most populous province and second largest in total area. It is home to the nation's most populous city, Toronto, and the nation's capital, Ottawa....

 at 340-360 Albert Street

Albert Street (Ottawa)

Albert Street is one of the main east-west roads in downtown Ottawa, Canada. Albert is one way going west. It carries the westbound portion of the transitway through downtown, with Slater Street just to the south carrying the eastbound portion...

. It is home to a variety of businesses, organizations and embassies.

The first tower comprises 18 floors, and was completed in 1986, while tower two was completed in 1992 with 21 floors. In July 2005, it was announced that a third tower with 19 floors would be added to the complex, and tower three opened less than two years later, within the original budget.

The building fronts the OC Transpo

OC Transpo

OC Transpo is the urban transit service of the City of Ottawa, Ontario, Canada. An integrated hub-and-spoke system of services is available consisting of: regular buses travelling on fixed routes in mixed traffic, typical of most urban transit systems; a bus rapid transit system — a high...

 Transitway

Ottawa Rapid Transit

In Ottawa, Ontario, Canada, the public transit service operated by OC Transpo has two rapid transit systems: the Transitway, a bus rapid transit network, and the O-Train, a diesel-powered light rail transit service operated on one line.-Major routes:...

, and has underground parking, a fitness center and 24-hour security.