Kızılırmak River

            Kızılırmak River (Kızılırmak Nehri), also known as the Halys River, is the longest river in Turkey among the rivers which originates and ends in Turkey (both origin and mouth being in Turkey). It is a source of hydroelectric power and is not used for navigation. 
            The Kızılırmak flows for a total of about 1,150 kilometers, rising in Eastern Anatolia and flowing into the Black Sea. The main tributaries are Delice,Devrez and Gökirmak. Dams on the river include the Boyabat, Altınkaya and Derbent.
            The historical fiction manga Red River is named after and largely set in the Kızılırmak basin, during the age of the Hittites.

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Istanbul

            Istanbul (İstanbul) is the largest city in Turkey, constituting the country's economic, cultural, and historical heart. With a population of 13.5 million is among the largest cities in the world by population within city limits. Istanbul is a transcontinental city, straddling the Bosphorus—one of the world's busiest waterways—in northwestern Turkey, between the Sea of Marmara and the Black Sea. Its commercial and historical center lies in Europe, while a third of its population lives in Asia. 
            The main objectives of Istanbul are: the Grand Bazaar (Kapalıçarşı / Büyük Çarşı), Topkapı Palace (Topkapı Sarayı), Galata Tower (Galata Kulesi), Taksim Square (Taksim Meydanı), Dolmabahçe Palace (Dolmabahçe Sarayı), Ortaköy Mosque (Ortaköy Camii), Gülhane Park (Gülhane Parkı), Yıldız Park (Yıldız Parkı), Fethi Paşa Korusu, Bosphorus Bridge, Emirgan Park (Emirgan Korusu), Hippodrome of Constantinople (Sultanahmet Meydanı), Valens Aqueduct (Bozdoğan Kemeri), Column of Constantine (Çemberlitaş sütunu), Church of the Saints Sergius and Bacchus (Küçük Ayasofya Camii), Monastery of Stoudios, Chora Church (Kariye Camii), Pammakaristos Church (Fethiye Camii), Hagia Sophia (Ayasofya), Anatolian Castle (Anadoluhisarı), Rumelian Castle (Rumelihisarı), Enderun School, Sultan Ahmed Mosque (Sultanahmet Camii), Süleymaniye Mosque (Süleymaniye Camii), New Mosque (Yeni Cami), Church of St. George (Aya Yorgi), Istanbul Archaeology Museums (İstanbul Arkeoloji Müzeleri), Pera Museum (Pera Müzesi), Sakıp Sabancı Museum (Sakıp Sabancı Müzesi), SantralIstanbul, Istanbul University ( İstanbul Üniversitesi), Boğaziçi University (Boğaziçi Üniversitesi), Haydarpaşa Terminal (Haydarpaşa Garı), İstiklal Avenue (İstiklâl Caddesi).

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Euphrates

            Euphrates ( الفرات‎: al-Furāt, fırat nehir, פרת) is the longest and one of the most historically important rivers of Western Asia. Together with the Tigris, it is one of the two defining rivers of Mesopotamia. Originating in eastern Turkey, the Euphrates flows through Syria and Iraq to join the Tigris in the Shatt al-Arab, which empties into the Persian Gulf. 
           Euphrates is crossing the following cities: Birecik, Ar-Raqqah, Deir ez-Zor, Mayadin, Haditha, Ramadi, Habbaniyah, Fallujah, Kufa, Samawah, Nasiriyah. The main tributaries are: Kara Su, Murat River (Murat Nehri), Sajur River (نهر الساجور), Balikh River (البليخ), Khabur River (Habur nehri).

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Maritsa river

          The Maritsa or Evros (Марица, Ἕβρος, Meriç) is, with a length of 480 km, the longest river that runs solely in the interior of the Balkans. It has its origin in the Rila Mountains in Western Bulgaria. The river enters the Aegean Sea near Enez, where it forms a delta. In ancient times, the Maritsa was known as the Hebros.

          It flows through Pazardzhik, Plovdiv, Parvomay, Dimitrovgrad, Svilengrad, Edirne, Kastanies, Pythio, Didymoteicho and Lavara. 
          The main tributaries are: Topolnitsa, Luda Yana, Stryama, Sazliyka, Tundzha, Ergene, Chepinska reka, Vacha, Chepelarska reka, Harmanliyska reka, Arda, Erythropotamos.

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Van lake

          Lake Van (Van Gölü) is the largest lake in Turkey, located in the far east of the country in Van district. It is a saline soda lake, receiving water from numerous small streams that descend from the surrounding mountains. Lake Van is one of the world's largest endorheic lakes (having no outlet). The original outlet from the basin was blocked by an ancient volcanic eruption.

          Although Lake Van is situated at an altitude of 1,640 m (5,380 ft) with harsh winters, it does not freeze due to its high salinity except occasionally the shallow northern section. Lake Van has an area of 3,755 km2 (1,450 sq mi) and a volume of 607 cubic kilometres (146 cu mi). The main islands are: Akdamar, Çarpanak, Adır, Kuş. On Akdamar island is The Armenian Cathedral of the Holy Cross (Սուրբ Խաչ, Surb Khach).

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