A magnificent pipe organ takes up most of the southern wall of the Aula Palatina, the 4th century throne room of the Roman Emperor Constantine. Also known as the Basilica of Constantine, the massive building now houses Trier’s Church of the Redeemer. The Aula Palatina became a Protestant church in 1856, but in 1944, the Basilica was burned in an Allied air raid, and much of the 19th century interior destroyed. The throne room is 67m long, 27m wide, and 33m high, the largest Roman interior in existence today. Germany, summer 2016.