Celje (pronounced [ˈtsɛːljɛ]) is the third-largest town in Slovenia. It is a regional center of the traditional Slovenian region of Styria and the administrative seat of the City Municipality of Celje (Slovene:Mestna občina Celje). The town of Celje is located below Upper Celje Castle (407 m or 1,335 ft) at the confluence of the Savinja, Hudinja, Ložnica, and Voglajna rivers in the lower Savinja Valley, and at the crossing of the roads connecting Ljubljana, Maribor, Velenje, and the Central Sava Valley. It lies 238 m (781 ft) above mean sea level (MSL). The Celje region is frequently shaken by minor earthquakes.