Some of the important cultural institutions in the city include the National Theater, which was looted during the 2003 invasion of Iraq, but efforts are underway to restore the theater. The live theater industry received a boost during the 1990s, when UN sanctions limited the import of foreign films. As many as 30 movie theaters were reported to have been converted to live stages, producing a wide range of comedies and dramatic productions. Institutions offering cultural education in Baghdad include The Music and Ballet School of Baghdad and the Institute of Fine Arts Baghdad. The Iraqi National Symphony Orchestra is a government funded symphony orchestra in Baghdad. The INSO plays primarily classical European music, as well as original compositions based on Iraqi and Arab instruments and music. Baghdad is also home to a number of museums which housed artifacts and relics of ancient civilization; many of these were stolen, and the museums looted, during the widespread chaos immediately after United States forces entered the city.