The Agustín Ross Cultural Center formerly known as the Ross Casino (Casino Ross), is the cultural center of the city of Pichilemu in O'Higgins Region, Chile. It was constructed between 1906 and 1909 at the request of politician Agustín Ross Edwards. The structure of the cultural center is very similar to that of the Grand Trianon in Versailles, France. It is best known for housing one of the first casinos of Chile; a casino operated in the building between 1917 and 1931. After 1931 all casinos, except the newly opened Casino de Viña del Mar, were declared illegal. The building has also been used as a post office, a store selling imported goods, a hotel, a discotheque, and a bar.
Over time, the building deteriorated, and a project was approved in January 2007 for it to be renovated for use as a cultural center. The restored building opened in January 2009 and houses the local library. In January 2010, the cultural center was inaugurated by President Michelle Bachelet and Mayor Roberto Córdova.