One Palliser Square, Office tower near Calgary Tower, Canada

One Palliser Square is a modern office tower with 27 stories reaching about 107 meters in Calgary's downtown business district. Its aluminum exterior defines the building's appearance, while the interior is primarily configured for office use.

One Palliser Square was completed in 1970 as a 27-storey office tower standing 107 metres tall in Calgary's downtown core. By 2005 the building was owned and operated by Aspen Properties. It is linked to the Calgary Tower through the Tower Centre complex, entered from the main floor.

The Tower Centre complex, entered from One Palliser Square's main floor, links the building to the Calgary Tower. It holds two theatre companies: Vertigo Mystery Theatre, with its Playhouse and Studio stages, and Lunchbox Theatre. The Auburn Saloon, a gathering spot for Calgary's theatre crowd, is also there.

The main floor gives access to the Tower Centre complex, which links One Palliser Square to the Calgary Tower; the theatres, Tower Physio and The Auburn Saloon are reached from there. As of 2005 the building was owned and operated by Aspen Properties.

One Palliser Square reaches 107 metres across 27 storeys, a height fixed when it was completed in 1970. Its main floor opens into the Tower Centre complex, the indoor route that links it to the Calgary Tower. Within that complex are two theatre companies, Vertigo Mystery Theatre's Playhouse and Studio stages and Lunchbox Theatre, plus Tower Physio and The Auburn Saloon.