The Museu de la Casa de la Marquesa is a free museum located in the historic Casa de la Marquesa building in Gandia, Spain. It offers a glimpse into the opulent lifestyle of the Marquesa de Gandia, showcasing the luxurious furnishings, artwork, and decorative objects that adorned the mansion. The museum provides a unique opportunity to explore the architectural and cultural heritage of the region through the lens of a noble family. Visitors can admire the grandeur of the building and learn about the history of the Marquesa de Gandia and her influence on the city.