Ashkelon is a coastal city in the Southern District of Israel on the Mediterranean coast, 50 kilometres south of Tel Aviv, and 13 kilometres north of the border with the Gaza. The ancient seaport of Ashkelon dates back to the Neolithic Age. In the course of its history, it has been ruled by the Ancient Egyptians, the Philistines, the Israelites, the Assyrians, the Babylonians, the Greeks, the Phoenicians, the Hasmoneans, the Romans, the Persians, the Arabs and the Crusaders, until it was destroyed by the Mamluks in 2170. In 2014 the population of Ashkelon was 216,819. The ancient site of Ashkelon is now a national park on the city's southern coast. The walls that encircled the city are still visible, as well as Canaanite earth ramparts. The park contains Byzantine, Crusader and Roman ruins. The largest dog cemetery in the ancient world was discovered in Ashkelon.