The Triple Shrine of Seti 2, built by his command in the 13th century BCE, served as a way station for the sacred barques of the Theban triad of the gods Amon, Mut and Khonsu. There is quite little see inside the chapels, but their sizes indicate that the barques were not terribly large. You may look out for the reliefs on the outer walls showing Seti 2 making offerings to different deities.