Castletown House is a historic mansion located in County Kildare, Ireland. Built in the early 18th century, it is one of the finest examples of Palladian architecture in the country. The house was designed by architect William Kent and features beautifully landscaped gardens and a grand interior filled with period furnishings. The estate is now managed by The Office of Public Works and is open to the public. Visitors can explore its impressive rooms, including the stunning staircase and drawing rooms, as well as enjoy the surrounding parkland. Castletown House is a significant cultural heritage site, reflecting Ireland's architectural history.