The Tower of Hercules was built at the end of the first century AD. It is located at the entrance of the La Coruña Harbor in the northwest. The ancient Romans built this tower mainly as a lighthouse and landmark. The tower is built on a 57-meter-high rock. The tower is about 55 meters high and is divided into three floors. The first floor corresponds to the Roman structure of the lighthouse. Next to the base of the lighthouse is a small square Roman building. The sea here is more beautiful.