Brest is a port city in Brittany in the northwest of France. The Penfeld divides the city. It is known for its rich maritime history and naval base. At the mouth of the Penfeld, overlooking the port, you will find the National Maritime Museum in Brest’s medieval castle. Tanguy Tower, a medieval tower, is on the other side of the river. The National Botanical Conservancy and Océanopolis are located to the northeast.