AUGUSTA – Old Fort Western, the 1754 National Historic Landmark fort, store and house museum on the Kennebec River, will mark Labor Day weekend, Aug. 30, 31 and Sept. 1, with special demonstrations and interpretation having to do with work and attitudes toward work and workers in late 18th-century Maine.

In honor of the holiday, all Maine union members and their families will be admitted free.

Old Fort Western will be open from 1 to 4 p.m. all three holiday weekend days. Regular admission is $5 for adults and $3 for children ages 6 to 16. Kids under 6 and all Augusta residents are admitted free.

After the holiday, the fort will switch to its Labor Day to Columbus Day 1 to 4 p.m. weekends-only schedule for walk-in visitors. Pre-scheduled school and other group programs will be available anytime either at the fort or in classrooms or where other groups meet, statewide. For the details, go to www.oldfortwestern.org.