The second-largest of the Canaries after Tenerife, Fuerteventura is geologically the oldest of all the islands in the archipelago. It has the longest coastline and is blessed with gentle valleys and sweeping plains. Near the capital, Puerto del Rosario, there are lovely beaches, and other beaches in the north and south of the island can be compared with the best in the world. Among the features of the island are its windmills, dotted around the landscape - evidence of the island's traditional agriculture. Puerto del Rosario, the capital, is on the east coast and was originally a watering-hole used by local farmers for their goats. In the early 19th century, Maria Estrada opened a tavern here, which paved the way for the development of the port. It has been the island’s capital since 1860. Among its attractions are the old harbour area, with its narrow alleyways lined with picturesque Canarian-style houses, and the Church of Nuestra Senora del Rosario.