Schloss Premstätten in Unterpremstätten, Styria, showcases distinctive Baroque and Renaissance architecture with documented origins dating to 1164 as a seat of the Lords of Premstätten. The castle features a three-story quadrangular design with an arcaded courtyard, exterior pilasters, and a prominent bell tower on its eastern facade. Interior highlights include Rococo stucco ceilings and wall paintings from the 1770s-1780s, plus a chapel dedicated to Saint Mary with a characteristic flat dome. Originally a missionary school during the 20th century, the castle now serves modern industrial purposes while maintaining its heritage significance and architectural integrity within the Styrian landscape.