Nessebar is situated on a beautiful peninsula which is a strategic forefront, an important sea port, a place for defence and a shelter for many civilizations. The peninsula was first inhabited in the Bronze Age by the ancient Thracians who called it Melsambria. The Greeks came later around the beginning of the 6th century BC and at that time the massive walls were built to protect the locals. They also built many temples, a school and a theatre. In 72 BC the town was conquered by Roman armies which stayed here for a century.