Devonian Gardens is a large indoor park and botanical garden located in the downtown core of Calgary, Alberta, Canada. In 2012 a major $37-million renovation was completed. Located on the Stephen Avenue pedestrian mall (8 Avenue SW) between 2 Street SW and 3 Street SW, the park is completely enclosed with glass and covers 2.5 acres (one full city block) on the top floor of The Core Shopping Centre (formerly TD Square). It is maintained by The City of Calgary Parks.