Located on the southern tip of Aquidneck Island, Newport is affectionately known as the "City by the Sea". Famous for its Gilded Age mansions, many of which are open for tours, such as the Vanderbilt's opulent Marble House, Newport remains a charming, well-heeled resort city. For a different view of the mansions, take the scenic Cliff Walk. The rocky shoreline is also dotted with lighthouses, including the granite Castle Hill.