The Old Third District Courthouse in New Bedford, Massachusetts, United States, is located at the corner of Second and William streets. It was built in 1853 by Russell Warren in the Greek Revival architectural style, as the home of the New Bedford Institute for Savings, a local bank. After the bank moved, the Bristol County courts came in. They, too, eventually outgrew it and moved elsewhere in the city. Since the creation of New Bedford Whaling National Historic Park in 1996, it has been used by the National Park Service (NPS) as the park's visitor center.