Ashtown Castle is a historic structure located in Phoenix Park, Dublin, Ireland. Built in the early 17th century, it originally served as a residence for the wealthy Ashtown family. The castle features a mix of architectural styles, showcasing elements from both the medieval and Renaissance periods. Today, Ashtown Castle is part of the Irish National Heritage Park and is open to the public. Visitors can explore its well-preserved interiors and learn about its history through informative displays. The castle is a popular attraction for those interested in Ireland's rich cultural heritage.