lowest to highest, the Mahmutlar, the Sugözü, and the Yumrudağ. The similar lithology extends beneath the city in a tectonic window. Bauxite, an aluminum ore, is common to the area north of city, and can be mined. The town is divided east–west by a rocky peninsula, which is the distinctive feature of the city. The harbor, city center, and Keykubat Beach, named after the Sultan Kayqubad I, are on the east side of the peninsula. Damlataş Beach, named for the famous "dripping caves", and Kleopatra Beach are to the west. The name "Cleopatra" possibly derives from either the Ptolemaic princess' visit here or the area's inclusion in her dowry to Mark Antony. Atatürk Bulvarı, the main boulevard, runs parallel to the sea, and divides the southern, much more touristic side of Alanya from the northern, more indigenous side that extends north into the mountains. Çevre Yolu Caddesi, another major road, encircles the main town to the north. Climate Alanya has a typical hot-summer Mediterranean climate (Köppen: Csa), or a humid subtropical climate (Trewartha climate classification: Cs). Located at the Mediterranean Basin, the subtropical high pressure zone ensures that most rain comes during the winter, leaving the summers long, hot, and dry, prompting the Alanya board of Tourism to use the slogan "where the sun smiles". Storm cells sometimes bring with them fair weather waterspouts when close to the shore. The presence of the Taurus Mountain in close proximity to the sea causes fog, in turn creating visible rainbows many mornings. The height of the mountains creates an interesting effect as snow can often be seen on them even on hot days in the city below. The sea at Alanya has an average temperature of annually, with an average August temperature of . Main sights On the peninsula stands Alanya Castle, a Seljuk era citadel dating from 1226. Most major landmarks in the city are found inside and around the castle. The current castle was built over existing fortifications and served the double purpose of a palace of local government and as a defensive structure in case of attack. In 2007, the city began renovating various sections of the castle area, including adapting a Byzantine church for use as a Christian community center. Inside the castle is the Süleymaniye mosque and caravanserai, built by Suleiman the Magnificent. The old city walls surround much of the eastern peninsula, and can be walked.