Afyonkarahisar (Turkish pronunciation: [afjonkaɾahiˈsaɾ], Turkish: afyon "poppy, opium", kara "black", hisar "fortress") is a city in western Turkey, the capital of Afyon Province. Afyon is in mountainous countryside inland from the Aegean coast, 250 km (155 mi) south-west of Ankara along the Akarçay River. Elevation 1,021 m (3,350 ft). Population (2010 census) 173,100  In Turkey, Afyonkarahisar stands out as a capital city of thermal and spa, an important junction of railway, highway and air traffic in West-Turkey, and the grounds where independence had been won. In addition, Afyonkarahisar is one of the top leading provinces in agriculture, globally renown for its marble and globally largest producer of pharmaceutical opium.