Sun Life Plaza
The Ampersand is a high-rise office complex in Calgary, Alberta, Canada. It consists of three identical skyscrapers, designated as North, West and East Tower, and connected by the lobby at ground level and by a shopping gallery at Plus 15 level.
Total area of the 3 buildings is 1.032 million square feet. Building floor plates are roughly 12,000 square feet each.
Towers
The towers are 28 stories high, and rise to. Sun Life Plaza - West was the first tower built, and was completed in 1981. Development continued with The Ampersand - North, completed in 1982, and was concluded in 1984 with Sun Life Plaza - East. Current occupants include the North West Redwater Partnership and Sproule.Suncor Energy is a former tenant where it had headquarters in Tower III and occupied much of the building prior to its $43 billion merger with PetroCanada in 2009. With the merger, the combined entity chose the former PetroCanada Centre in downtown Calgary to house the bigger company.
| Tower | Address | Floors | Height | Built |
| West | 144 4 Ave SW | 28 | 1981 | |
| North | 140 4 Ave SW | 28 | 1982 | |
| East | 112 4 Ave SW | 28 | 1984 |