Lucia include the Royalton Saint Lucia Resort & Spa Casino and the St. This casino features over 500 slot machines and 30 gaming tables, making it the perfect place to spend an evening if you’re looking for excitement. The largest casino on the island is the Treasure Bay Casino, located in the resort town of Rodney Bay. Lucia is home to a number of casinos, all of which offer visitors a chance to enjoy the island’s tropical atmosphere while trying their luck at a variety of games.