CN Tower

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Height: Occupied
447 m / 1,467 ft
Height: To Tip
553.3 m / 1,815 ft
Height: Architectural
553.3 m / 1,815 ft
CN Tower Outline
Height: Observatory
447 m / 1,467 ft
# of Elevators
Top Elevator Speed
6.1 m/s


Official Name CN Tower
Other Names Canadian National Tower
Structure Type Tower
Status Completed
Country Canada
City Toronto
Street Address & Map 301 Front Street West
Postal Code M5V 2T6
Building Function telecommunications / observation / retail
Structural Material concrete
Construction Start 1973
Completion 1976
Retrofit End 2011
Official Website CN Tower

Original Companies Involved

Developer Canadian National Railways
Design WZMH Architects; John Andrews International
Structural Engineer
Design Nicolet Carrier Dressel Associates
Material Supplier
• Construction Hoists Alimak Hek
• Elevator Otis Elevator Company

Retrofit Companies Involved

MEP Engineer
Design Mulvey & Banani
Other Consultant
• Security Mulvey & Banani

About CN Tower

World's tallest self-supported structure 1976 - 2010.

CTBUH Initiatives

Toronto Regional Tour
29-30 Oct 2015 – Tour Report

Warm Weather Spaces Walking Tours 2015
17 Sep 2015 – Tour Report

Height: The History of Measuring Tall Buildings
Dec 2009 – CTBUH News

Research Papers

World’s Highest Observation Decks
Aug 2015 – CTBUH Journal, 2015 Issue III

A New Leader for Telecom Towers
Jun 2012 – CTBUH Journal, 2012 Issue II

Tallest World Records
Nov 2010 – CTBUH Journal, 2010 Issue IV

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