Afyonkarahisar is a city in western Turkey, the capital of Afyon Province. Afyon is in the mountainous countryside inland from the Aegean coast, 250 km (155 mi) south-west of Ankara along the Akarçay River. In Turkey, Afyonkarahisar stands out as a capital city of hot springs and spas, an important junction of railway, highway and air traffic in West-Turkey, and the place where independence was won. In addition, Afyonkarahisar is one of the top leading provinces in agriculture, globally renowned for its marble and is the world’s largest producer of pharmaceutical opium.
The name Afyon Kara Hisar, since opium was widely grown here and there is a castle on a black rock. Also known simply as Afyon. Older spellings include Karahisar-i Sahip, Afium-Kara-hissar and Afyon Karahisar. The city was known as Afyon (opium), until the name was changed to Afyonkarahisar by the Turkish Parliament in 2004.