Situated in East New Britain, Rabaul was most beautiful city of PNG until it was devastated by a series of volcanic eruptions in 1994. It is a charming harbour town with a great character. Not much is left of the earlier beauty of the place, but it is still worth a visit. Diving into the sea, which is littered with war relics from the Second World War, is an exciting affair. The nearby Duke of York islands offer a good excursion trip from Rabaul.