Calgary is located at the transition zone between the Canadian Rockies foothills and the Canadian Prairies. The city lies within the foothills parkland natural sub region of the parkland natural region and the foothills fescue sub region of the grasslands natural region. Calgary's elevation is approximately 1,048 m (3,438 ft) above sea level downtown, and 1,084 m (3,557 ft) at the airport. The city proper covers a land area of 726.5 km (280.5 sq mi) (as of 2006) and as such exceeds the land area of the City of
