and was first tested on August 1, 2014. 12 lights were added to the crown and 24 to the exterior floor. Each light has been programmed to be able to create over 16.5 million combinations of colour and lighting effects. It has been used since October 8, 2014, becoming a more noticeable part of the city skyline at night. Architecture The Calgary tower features a revolving restaurant, Sky 360, that rotates so as to give customers a scenic view of downtown Calgary. The restaurant does a complete rotation every 45 minutes during the day and every 60 minutes in the evening. The base of the tower is connected through the +15 skyway network to One Palliser Square, Fairmont Palliser Hotel and EnCana Place. Stairs to the observation deck are not opened to the public, but have been used on occasions for publicity, as well as for an annual charity stair-climbing race. There are 802 steps. The Vertigo Theatre, founded in 1976 originally as Pleiades Theatre, is located at the base of the tower. They have been entertaining the city from their location in the Calgary Tower since 2003, providing a full season of plays in the mystery genre, for adult and youth audiences. The tower also features a carillon that was presented to the city by the local Dutch community in 1975 as part of the city's centennial celebrations. It was played daily at noon until removed in 1987 for storage. The carillon has since been refurbished and restored to operation. It is similar in design to the Skylon Tower in Niagara Falls, Ontario. Gallery References External links Video from top of Calgary Tower Buildings and structures in Calgary Historic buildings in Calgary Modernist architecture in Canada Observation towers in Canada Tourist attractions in Calgary Towers completed in 1968 Towers in Alberta Towers with revolving restaurants 1968 establishments in Alberta