Brussels has a large concentration of Muslims, mostly of Moroccan, Turkish, Syrian and Guinean ancestry. The Great Mosque of Brussels, located in the Parc du Cinquantenaire/Jubelpark, is the oldest mosque in Brussels. Belgium does not collect statistics by ethnic background, so exact figures are unknown. It was estimated that, in 2005, people of Muslim background living in the Brussels Region numbered 256,220 and accounted for 25.5% of the city's population, a much higher concentration than those of the other regions of Belgium.