Old Wethersfield, also known as Old Wethersfield Historic District, and historically known as Watertown or Pyquag, is a section of the town of Wethersfield, Connecticut roughly bounded by the borders of the adjacent city of Hartford and town of Rocky Hill, railroad tracks, and I-91. The site of the first permanent European-American settlement in the state of Connecticut, it was added to the National Register of Historic Places in 1970.