The largest of the Canary islands, Tenerife is dominated by a central mountain range and several spectacular valleys. It has a national park, a gigantic natural crater some 19km (12 miles) in diameter and, to the north, the Pico del Teide, the highest mountain in Spain. Santa Cruz is a city rich in architecture (including the Church of San Francisco) and museums housing art treasures and historical mementoes of the Canaries. The village of Guimar, 25km (15 miles) southeast of Santa Cruz, houses the archaeological digs of Pyramid Park, while Puerto de la Cruz is the most important resort and also has several buildings dating back to the 17th century.