Johannisburg Palace is a historic castle located in Aschaffenburg, Germany. Built in the early 17th century, it served as a residence for the Prince-Bishops of Mainz. The palace showcases a blend of Renaissance and Baroque architectural styles, featuring impressive facades and beautifully landscaped gardens. The interior of Johannisburg Palace houses several museums, including the Aschaffenburg Art Gallery, which displays a collection of European art. Visitors can explore the grand halls, ornate rooms, and the stunning Great Hall, which is known for its magnificent ceiling and intricate woodwork.