Houston is the largest city in Texas and the fourth largest in the United States. It is huge, both in population and in land area. "Urban sprawl" is a term tailor-made for this city, due to Houston being the largest unzoned city in the country. Houston is a multicultural city home to some of the nation's largest Asian, Arab and Latin American populations. But its culture is not limited to diverse population — it also boasts a world class symphony and theater district that includes a full-time ballet company and opera.