High Quality Content by WIKIPEDIA articles! The Paddock Arcade is a 19th century shopping mall located in Watertown, New York. Built in 1850, it is the second oldest covered shopping mall in the United States. Since it has seen uninterrupted use since it opened in 1850, it carries the distinction of being the country`s oldest, continuously operating covered shopping mall. The Paddock Arcade was listed on the National Register of Historic Places in 1976.