Celje ( ; Cilli; Cille) is the third largest city in Slovenia. Exhibiting the typical characteristics of a Central European city, it is the regional center of Lower Styria and the administrative seat of the municipality of the same name. Celje is located under the Upper Celje Castle (407 m) at the confluence of Savinja, Ložnica, and Voglajna (with its tributary Hudinja) rivers in the lowest part of the Savinja Valley. It is 241 m above mean sea level (MSL).