Watkins Woolen Mill State Historic Site is part of Watkins Mill State Park. Tours of the 19th century woolen mill and Watkins home are given daily. This is the only 19th century American woolen mill with its original machinery intact. During summer months, a Living History Farm program is featured on Fridays, Saturdays and Sundays. The site features a visitor center, a lake, camping, picnic sites and a shelter, fishing, a paved bicycle trail, a swimming beach, and hiking and equestrian trails. The site is located seven miles east of I-35 on Route 92, then one mile north on Route RA. Tours: $4; ages 6-12 $3; younger than 6, free. Visitor Center Hours: April-Oct.: Mon.-Sat., 9:30 a.m.-5 p.m.; Sun., 10:30 a.m.-5 p.m. Nov. and March: Mon.-Sat., 9:30 a.m.-4:30 p.m.; Sun., 10:30 a.m.-4:30 p.m. Dec.-Feb.: Fri.-Sat. and Mon. holidays, 9:30 a.m.-4:30 p.m., Sun. 10:30 a.m.-4:30 p.m.