“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.
Occoquan Lemonade Stroll, more than 25 shops throughout Historic Occoquan will have lemon treats and lemon-themed promotions. Look for the yellow balloons. 10 a.m.-5 p.m., Mill Street, Occoquan. Free. 703-201-8499.
“Fantastic Metallic,” an exhibit featuring copper work by Anne Jordan and photography by Gerry Gantt, both of Fairfax. 11 a.m.-5 p.m. daily, through Aug. 1. Artists’ Undertaking, 309 Mill St., Occoquan. Free. 703-494-0584.
Amy Vaughters exhibit, the featured artist shares her photographs that examine time and space. 11 a.m.-5 p.m. daily, through July 31, Art A La Carte Gallery, 310 Mill St., Occoquan. Free. 703-496-9540.
Pringle House Hospital Weekend, to commemorate the 153rd anniversary of Ben Lomond being used as a Civil War hospital, the site will host a Civil War encampment, medical demonstrations by living historians and specialized tours. A Red Cross blood drive runs concurrently. 11 a.m.-4 p.m., Ben Lomond Historic Site, 10321 Sudley Manor Dr., Manassas. $5, children 5 and younger free. 703-367-7872 or www.pwcgov.org.
Sunday in the Park with Geocaching, a ranger will help you search for and identify trees. 11 a.m., 2 and 4 p.m., Leesylvania State Park, 2001 Daniel K. Ludwig Dr., Woodbridge. $3, registration required. 703-583-6904.
“Comedy of Errors,” the Castaways Repertory Theatre presents Shakespeare’s comedy of mistaken identity. 3 p.m. Sunday, 7 p.m. Saturday, Locust Shade Regional Park, 4701 Locust Shade Dr., Triangle. $4. 703-221-8579 or www.castawaystheatre.org.
Rippon Lodge Sundae Fun Day, celebrate National Ice Cream Day with games and a sweet treat. 1-4 p.m., Rippon Lodge, 15520 Blackburn Rd., Woodbridge. Free. 703-499-9812.
Author Andrew Carroll, a discussion of his book “Here Is Where: Discovering America’s Great Forgotten History.” Carroll hunted down forgotten historical sites in each state. 2 p.m., Manassas Museum, 9101 Prince William St., Manassas. Free. 703-368-1873.
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.
Canoe tour, a ranger leads a guided tour on Powell’s Creek. 3:30 p.m., Leesylvania State Park, 2001 Daniel K. Ludwig Dr., Woodbridge. $9, registration required. 703-583-6904.
“Along the Rail” exhibit, photographer Andrew Morgan depicts areas near the tracks between Culpeper and Remington. 10 a.m.-5 p.m. Mondays-Fridays, 1-5 p.m. Saturdays, through Wednesday, Center for the Arts, Caton Merchant Family Gallery, 9419 Battle St., Manassas. Free. 703-330-2787 or www.center-for-the-arts.org.
Adrift in Art, local artist Ann White shares techniques for painting on driftwood. 10 a.m. and 2 p.m., Leesylvania State Park, 2001 Daniel K. Ludwig Dr., Woodbridge. $5, reservations required. 703-583-6904.
Old Town Manassas walking tour, led by costumed interpreters. 11 a.m. Mondays-Wednesdays, Fridays-Saturdays, noon Thursdays, 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.
Random Reads book club, a discussion of “Into the Darkest Corner” by Elizabeth Haynes. 1 p.m., Bull Run Regional Library, 8051 Ashton Ave., Manassas. Free. 703-792-4530.
Lake Jackson Mid County Lions Club meeting, 6:30 p.m., Great American Steak and Buffet, 8365 Sudley Rd., Manassas. Free. 703-369-6791.
Prince William Wildflower Society, Janet Davis of Hill House Nursery discusses native groundcovers. 7:30 p.m., Bull Run Unitarian Universalist Church, 9350 Main St., Manassas. Free. 703-368-2898.
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, Loy E. Harris Pavilion, 9201 Center St., Manassas. Free. 703-361-9800.
Ident-a-Child program, Prince William County Sheriff’s Department makes identification cards for children. 10:30 a.m.-12:30 p.m., Bull Run Regional Library, 8051 Ashton Ave., Manassas. Free. 703-792-4530.
Christylez Bacon & Wytold, 11 a.m., Hylton Performing Arts Center, Merchant Hall, 10960 George Mason Cir., Manassas. $15, $5 children. 703-993-7759.
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.
“Lunch & Learn” retirement discussion, have lunch with residents and staff and learn about life at a retirement community. 11 a.m.-2 p.m., Westminster at Lake Ridge, 12191 Clipper Dr., Lake Ridge. Free. 703-496-3440.
Spanish chat, bring lunch and practice speaking Spanish. Noon-2 p.m., Central Community Library, 8601 Mathis Ave., Manassas. Free. 703-792-8360.
Elvis impersonator Michael Hoover, the tribute artist performs Elvis hits including “Don’t Be Cruel,” and “Love Me Tender” as part of the Summer Concert series. 7:30 p.m., National Museum of the Marine Corps, parade deck, 18900 Jefferson Davis Hwy., Triangle. Free. 877-635-1775.
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.
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.
Home seller seminar, presented by local real estate broker Bob Hummer. 10 a.m.-1 p.m., Strayer University, 13385 Minnieville Rd., Woodbridge. Free. 703-878-4866 or www.military-realestate.com.
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.
Children’s multicultural book club, for children 3 and older with a parent or guardian, the club is divided into age groups and each group reads an age-appropriate book. To find out book titles, pick up a copy of the club’s newsletter at the Information Desk. 1-2:30 p.m., Chinn Park Regional Library, 13065 Chinn Park Dr., Woodbridge. Free. 703-792-4800.
Manassas writers group, writers provide comments on one another’s works. 2 p.m., Bull Run Regional Library, 8051 Ashton Ave., Manassas. Free. 703-792-4500.
Ghost Hunting 101, the Ben Lomond House, which once housed a Civil War hospital, is partnering with East Coast Research and Investigation Paranormal Team for a seminar on current paranormal theories and techniques. Following the seminar, participants can help with a paranormal investigation. 7 p.m., Ben Lomond Historic Site, 10321 Sudley Manor Dr., Manassas. Seminar $40, seminar and investigation $100. Reservations required. 703-367-7872 or www.pwcgov.org.