The Gran Teatro de La Habana Alicia Alonso is the most famous theatre in Cuba. It is located in a building known as the Galician Centre of Havana. The theatre has been home to the Cuban National Ballet and on its main stage, the International Ballet Festival of Havana. Its facilities include theatres, a concert hall, conference rooms, a video screening room, an art gallery, a choral centre, and several rehearsal halls for danzarias groups and dance companies. A total of 6 DV air handling units from Systemair Spain supplies the building with fresh air.