War and Peace tintypes, an exhibit of portraits by Melissa Cacciola depicting men and women from various backgrounds in the armed forces. 9 a.m.-5 p.m. daily, through Dec. 1, National Museum of the Marine Corps, 18900 Jefferson Davis Hwy., Triangle. Free. 877-635-1775.
“Angles and Curves,” the exhibit features lotus photographs printed on metal by Gerry Gantt, jewelry by Sherry Chaples and carved eggshells by Tina Kannapel. 11 a.m.-5 p.m. daily, through Sept. 1. Artists’ Undertaking, 309 Mill St., Occoquan. Free. 703-494-0584.
Pyrite Mine hike, a 21 / 2-mile ranger-led moderately strenuous walk. Bring water. 10 a.m., Prince William Forest Park, Parking lot D, 18100 Park Headquarters Rd., Triangle. Free; park entrance fee, $5. 703-221-7181.
Bristoe Station Battlefield guided tours, learn about two Civil War battles that took place at the site in 1862 and 1863. 11 a.m.-3 p.m. second and fourth weekends of each month. Tours leave on the hour, Bristoe Station Battlefield Heritage Park, 10708 Bristow Rd., Bristow. Free. 703-366-3049 or www.pwcgov.org/historicsites.
Prince William County Fair, the largest county fair in Virginia boasts agricultural and livestock exhibits, midway rides and games, entertainment, food vendors, truck and tractor pull, demolition derby, monster trucks and more. Friday, Monday and Wednesday at 5 p.m., Saturday and Sunday at noon, Tuesday at 2 p.m., through Aug. 16. Prince William County Fairgrounds, 10624 Dumfries Rd., Manassas. $10; seniors 60 and older and children 5-13, $5; age 4 and younger, free; Tuesday, $2. 703-368-0173. www.pwcfair.com.
Bingo, proceeds support local veterans. Doors open at noon on Sunday with games beginning at 2 p.m. Doors open at 5:15 p.m. Mondays with games beginning at 7:15 p.m., Woodbridge American Legion, 3640 Friendly Post Lane, Woodbridge. $15 minimum. 703-494-4304.
Concert and ice cream social, The Jazz Faction performs. Bring a blanket or a lawn chair and enjoy ice cream after the concert. 3 p.m., Loy E. Harris Pavilion, 9201 Center St., Manassas. Free. 703-361-9800 or www.pwcb.org.
“Responding to Nature,” paintings by local artists Judy Almond, Michele Franz and Genevieve Ivan. 10 a.m.-5 p.m. Mondays-Fridays, 1-5 p.m. Saturdays, through Sept. 10., Center for the Arts, Caton Merchant Family Gallery, 9419 Battle St., Manassas. Free. 703-330-2787 or www.center-for-the-arts.org.
Old Town Manassas walking tour, led by costumed interpreters. 11 a.m. Mondays-Saturdays, Manassas Museum, 9101 Prince William St. $5. 703-368-1873.
Job search network group, plus discussion of various topics related to the search process. 1-3 p.m. Mondays, House of Mercy, 8170 Flannery Ct., Manassas. Free. 703-659-1636.
Monday Afternoon Book Club, the group discusses “Mr. Penumbra’s 24-Hour Bookstore” by Robin Sloan. 1 p.m., Chinn Park Regional Library, 13065 Chinn Park Dr., Woodbridge. Free. 703-792-4800.
Bright Star Touring Theatre, “Once Upon a Time” tells the tales of Cinderella and Jack and the Beanstalk. 10:30 a.m., Chinn Park Regional Library, 13065 Chinn Park Dr., Woodbridge. 703-792-4800; and 3 p.m., Central Community Library, 8601 Mathis Ave., Manassas. Free. 703-792-8360.
Historical fiction book discussion group, the group discusses “The Secret History” by Stephanie Thornton. 1 p.m., Potomac Community Library, 2201 Opitz Blvd., Woodbridge. Free. 703-792-8330.
Manassas farmers market, 5-8 p.m. Tuesdays and 7:30 a.m.-1 p.m. Thursdays, Loy E. Harris Pavilion, 9201 Center St., and 7:30 a.m.-1 p.m. Saturdays, Parking Lot B, West Street, next to the train station visitors center. 703-361-6599 or www.visitmanassas.org.
“Take Out Tuesday” concert, buy dinner from a restaurant and listen to local musicians. 6-8 p.m. Tuesdays, through Aug. 26, Loy E. Harris Pavilion, 9201 Center St., Manassas. Free. 703-361-9800.
Bull Run BookTalkers, the group discusses “Me Before You” by Jojo Moyes. 7 p.m., Bull Run Regional Library, 8051 Ashton Ave., Manassas. Free. 703-792-4530.
Prince William County Bar Association Legal Series, this month’s topics are bankruptcy and collections. 7 p.m., Chinn Park Regional Library, 13065 Chinn Park Dr., Woodbridge. Free. 703-792-4800.
Bright Star Touring Theatre, “Once Upon a Time” tells the tales of Cinderella and Jack and the Beanstalk. 10:30 a.m., Bull Run Regional Library, 8051 Ashton Ave., Manassas. 703-792-4530; and 2 p.m., Potomac Community Library, 2201 Opitz Blvd., Woodbridge. Free. 703-792-8330.
English Conversation Club, new speakers of English practice their skills. 11 a.m. and 7 p.m., Chinn Park Regional Library, 13065 Chinn Park Dr., Woodbridge. Free. 703-792-4800.
Lake Ridge Toastmasters Club, an open house for Lake Ridge Club 8913. 7:30 p.m., Tall Oaks Community Center, 12298 Cotton Mill Dr. $62 membership fee. 703-491-3020.
Spanish chat, bring lunch and practice speaking Spanish. Noon-2 p.m., Central Community Library, 8601 Mathis Ave., Manassas. Free. 703-792-8360.
Thomas Jefferson Toastmasters Club, regular meeting. 7:30 p.m., Good Shepherd United Methodist Church, 14999 Birchdale Ave., Dale City. $66 annual dues. 703-590-2926.
Toastmasters International, Woodbridge club. 7:30 p.m., Ebenezer Baptist Church, 13020 Telegraph Rd., Woodbridge. $39 membership fee. 703-731-2120.
U.S. Navy Jazz Ensemble, The Commodores perform outdoors as part of the museum’s summer concert series. Bring a lawn chair or blanket. 7:30 p.m., National Museum of the Marine Corps, 18900 Jefferson Davis Hwy., Triangle. Free. 877-635-1775.
Business Women of Prince William County, a monthly networking meeting featuring roundtable introductions, a brief program and a 50/50 raffle. 11:30 a.m.-1 p.m., Montclair Country Club, 16500 Edgewood Dr., Montclair. Admission, free; attendees pay for lunch. 910-389-5771, 703-369-6717 or email@example.com or firstname.lastname@example.org.
Lake Ridge farmers market, sponsored by Smart Markets. 3-7 p.m. Fridays, Smart Markets Lake Ridge, Oakwood Pool parking lot, 12619 Oakwood Dr. Free. 703-491-2154.
American Legion dinner, the public is invited to dinner with a different special every week. Proceeds support local veterans and the community. 5:30-7:30 p.m. Fridays, Woodbridge American Legion, 3640 Friendly Post Lane, Woodbridge. $5-$15. 703-494-4304 or www.vapost364.org.
Art’s Alive, works by Aviza Black, an artist and fashion illustrator who lived at Rippon Lodge, will be on display. Event also includes demonstrations by local artists, who will be selling their work. 9 a.m.-1 p.m., Rippon Lodge, 15520 Blackburn Rd., Woodbridge.$5.
Pyrite Mine hike, a 2 1 / 2-mile ranger-led moderately strenuous walk. Bring water. 10 a.m. and 2 p.m., Prince William Forest Park, Parking lot D, 18100 Park Headquarters Rd., Triangle. Free; park entrance fee, $5. 703-221-7181.
“Moon Over Buffalo” auditions, auditions for Rooftop Production’s fall comedy will consist of cold readings from the script. 1:30-4:30 p.m. Saturdays, through Aug. 23, Candy Factory, Kellar Theater, 9419 Battle St., Manassas. Free. 703-330-2787 or www.center-for-the-arts.org.
Delta Sigma Theta Crab Feast Fundraiser, the event, sponsored by the Prince William chapter, features a buffet including crab, flounder, corn-on-the-cob, baked beans and corn bread, and music by DJ McFreak to benefit the sorority’s scholarship and public service fund. 3-8 p.m., VFW Post 1503, 14631 Minnieville Rd., Dale City. $65. 703-408-8944 or email@example.com.
Dixie Power Trio, the “trio of four,” made up of Zack Smith on cornet and accordion, Andy Kochenour on bass, Chuck Underwood on guitar, and Byron McWilliams on drums performs a mix of New Orleans jazz, Zydeco and dixieland music. Bring a blanket or lawn chair for this outdoor concert. 6:30-8 p.m., Loy E. Harris Pavilion, 9201 Center St., Manassas. Free. 703-330-2787 or www.center-for-the-arts.org/events.