>> it's not just about saving priceless works of art, this is the country's spiritual heritage. they have run out of the space in the basement. even religious sites fear the worst. this mass at lviv cathedral was one of the last before its giant stain glass windows were boarded up with steel plates. praying for protection in a war where it seems no place is sacred from attack. in lviv, ukraine. and thank you for your company. cnn coverage of the desperate situation in ukraine continues. after the break.