This stock photo includes the Calgary skyline of high-rise buildings, the Calgary Tower, and the Centre Street Bridge spanning the Bow River at dusk in the City of Calgary, Alberta, Canada. Calgary is well-known as a destination for winter sports and ecotourism with a number of major mountain resorts near the city and metropolitan area. Economic activity in Calgary is mostly centred on the petroleum industry; however, agriculture, tourism, and high-tech industries also contribute to the city's economic growth. In 1988, Calgary became the first Canadian city to host the Olympic Winter Games, and one of the fastest long track speed skating ice rinks in the world was built at the University of Calgary to accommodate these Games.