Ottersbach Castle near the Sulm River in Großklein is a late baroque structure that has witnessed over 400 years of Styrian history and noble family tradition. The Abel family has maintained stewardship of this castle since 1925, with comprehensive renovations completed in 1926, 1977, 1988, and 2005. The castle now features beautifully manicured gardens and two elegant banqueting halls, making it a highly regarded venue for weddings and celebrations in southern Styria.