Miercurea Ciuc (Romanian: [ˈmjerkure̯a ˈtʃjuk] ; Hungarian: Csíkszereda [ˈt͡ʃiːksɛrɛdɒ] ; German: Szeklerburg) is the county seat of Harghita County, Romania. It lies in the Székely Land, a mainly Hungarian-speaking ethno-cultural region in eastern Transylvania, and is situated in the Olt River valley. The city administers three villages: Ciba (Csiba), Harghita-Băi (Hargita-fürdő), and Jigodin-Băi (Zsögöd-fürdő), including Jigodin (Csíkzsögöd).