The region is located on a mountainous divide that runs from east to west. The most conspicuous geographic feature is Observatory Ridge, which is named for the large observatory located on it.[#endnote_] The recreational spaces are no longer used, due to security problems. The CBD area lacks open spaces; although there are small neighbourhood parks in all suburbs, they are also not used due to mugging concerns. Both the University of the Witwatersrand and the University of Johannesburg are located in the inner city. One of South Africa's leading sporting venues, Ellis Park Stadium, is located in Doornfontein. It serves as primary home to one of South Africa's most famous football sides, the Orlando Pirates, and the exclusive home of Jo'burg's two professional rugby union teams, the Lions in the Southern Hemisphere Super Rugby competition and the Golden Lions in the domestic Currie Cup. It will also be a venue for the 2010 FIFA World Cup. Johannesburg Stadium, a secondary home to the Pirates, is nearby.