The Houston Museum District is the cultural center of Houston; no other area in Houston has as many museums, galleries, and other cultural aspects as the Museum District. Because of this the Museum district is very popular with both local residents and out of town tourists that bring significant revenue to the businesses in the area. As of 2011 there were 18 museums operating in the Museum District all of which have their own special area of focus so many people visit multiple museums while they're in the area.