Turkey has a variety of climates and landscapes that attract many tourists. The country has beautiful beaches along its coasts in the Black Sea, Mediterranean Sea, Aegean Sea, and Sea of Marmara. It also has many historical sites, including ancient ruins, mosques, and castles. Coastal tourism, focused around beaches and seaside resorts, is a major part of Turkey's tourism industry. The southern coasts along the Aegean and Mediterranean seas are especially popular with foreign visitors. Turkey also draws tourists with its many historic sites around the country, such as Maiden's Tower and Galata Tower in Istanbul, as well as ancient ruins and structures across Anatolia.