Freedom Park Nature Walk — Held the last Saturday of each month, nature walks are led by a local expert on a different topic each month. Participants must be 16 or older. 8 a.m. Saturday. Freedom Park, 5537 Centerville Road. Free.
Summer Concert Series — Poisoned Dwarf plays traditional Celtic music. 5 p.m. Sunday. Grace Episcopal Churchyard, 111 Church St., Yorktown. Free.
Summer Breeze Concert Series — U.S. Air Force Heritage Brass Ensemble performs. The ensemble’s 10 brass players, percussionist and vocalist present a diverse repertoire. 7-9 p.m. Wednesday. Merchants Square. Free.
National Park Service Centennial — Celebrate with NPS with free admission to national parks and other federal sites throughout the country, including Yorktown Battlefield and Historic Jamestowne. 9 a.m.-5 p.m. Thursday. Free.
Hair of the DoG Tasting — Hair of the DoG Bottle Shop hosts a free tasting, with featured breweries and styles each week. 5-8 p.m. Friday. 401 W. Duke of Gloucester St. Free.
Fourth Friday — Jesse Chong performs with his band. Chong’s musical style is often compared to Dave Matthews, Jimi Hendrix, Bob Marley and John Mayer. 5:30-8:30 p.m. Friday. Jamestown Beach Event Park, 2205 Jamestown Road. Free.
Blades of Shakespeare — Williamsburg Regional Library hosts an exhibition on historical sword play from the time periods Shakespeare wrote about, led by stage combat instructors Craig Lawrence and Sara Hodges. 1 p.m. Saturday. 515 Scotland St. Free.
Sunset Serenades — Roebuck performs swamp blues, jump blues, shanties and more. 8-11 p.m. Friday. Chowning’s Tavern Garden, 109 E. Duke of Gloucester St. Free.
Estuaries Day — Day starts with the York River State Park 5K Race, continuing with fossil hunting, hiking, paddling. Exhibitors will have hands-on displays, including Virginia Departments of Forestry and Game & Inland Fisheries. 9 a.m.-3 p.m. Saturday. 9801 York River Park Road. Free, $4 parking.
CVA National Model Aviation Day — Colonial Virginia Aeromodelers present a free airshow with quadcopters, warbirds, giant scale airplanes, aerobatics and more. 11 a.m.-4 p.m. Saturday. 16101 Old Tomahund Drive. Free.
