The Angle Tree Stone is a historic boundary marker astride the border of North Attleboro, Massachusetts and Plainville, Massachusetts.The slate marker was built in 1790 by a father and son team of gravestone makers. The stone was added to the National Historic Register in 1976. The stone replaced the "Angle Tree" from the 17th century, which was a surveying landmark for the boundary between Bristol and Norfolk counties, and also between North Attleborough and Plainville, Massachusetts. The county border is a straight east-west line coming from Cumberland, Rhode Island to the site of the tree and then turning at an angle and running in a straight line from there almost to Massachusetts Bay near Cohasset.
The Angle Tree Stone has been encased in a brick and plexiglass structure since 1985 to protect it from the ravages of graffiti. It is set back 1/4 mile down a dirt access road and footpath.
Address 659R High St, North Attleboro 02760, United States
Coordinates 41°59'7.087" N -71°21'51.626" E