The Costa Brava ends (or begins) in Blanes. Sa Palomera, a jagged rock between the port and the beach is the symbolic milestone. This seafaring town with a long- standing tradition of coastal shipping developed in a semi-circular bay dominated by a hill upon which the ruins of the Sant Joan Castle stand. The town has a seafront promenade and interesting historic monuments including Gothic buildings erected by the lineage of Viscounts of Cabrera, such as the mansion or the fountain on the Carrer Ample, a remarkable octagonal-shaped fountain dating from the 15th century. The Fishing Research Institute has an interesting aquarium with Mediterranean fauna.