The film tells about the Cathedral of St. Vitus in Prague. Part 1 Mountain landscapes. Explosion, the stone splits in half. Views of St. Vitus Cathedral. The interiors of the cathedral. Craftsmen are repairing the roof of the cathedral. Panorama of the old part of Prague (filmed from the roof of the cathedral). View of the Charles Bridge over the Vltava, pedestrians are walking along the bridge. Part 2: The interiors of the cathedral. Clock on the tower of the cathedral. Rocks over the river. The master knocks out a pattern on the stone.