Because the town was relatively poor in the late 19th century and early 20th century, few people "modernized" their old houses by tearing them down and rebuilding. As a result, many of the houses built in the 18th century and early 19th century remain, as well as six or more with portions dating from the late 17th century. Two National Register Historic Districts have been established to include the old Town Center and a two-mile (3 km) strip along North Main Street; and scattered individual houses have also been listed: a total of 77 old houses. A very small Town Historic District also exists in the old Town Center. There are many houses that still stand that were built before the Revolutionary War.