The Slovenian Youth Theatre or Mladinsko Theatre (Slovene: Slovensko mladinsko gledališče) was founded in Ljubljana in 1955 as the first professional theater for children and youth in Slovenia. It is situated in the Baraga Seminary, which was built by architect Jože Plečnik in the center of Ljubljana. In the 1980s, it became a center of theatrical research and politically-engaged theater. It is known for a wide range of innovative poetics of different directors and an ensemble energy, a Peter Brook-like approach to acting with a laboratory for theatre research for actors, directors, choreographers and musicians to research, develop, and create.