What's Doing

GREAT FREDERICK FAIR -- Friday- Saturday 9 a.m. to 10 p.m. $5; ages 9 and younger free. Concert tickets, $25-$35. 797 E. Patrick St., Frederick. 301-663-5895.

ST. MARY'S COUNTY FAIR -- Friday- Saturday 9 to 9, Sunday 9 to 6. $5; $1 for ages 6 to 17; ages 5 and younger free. St. Mary's County Fairgrounds, Leonardtown. 301-475-2256.

VIRGINIA STATE FAIR -- Friday and Saturday from 10 to midnight, Sunday- Thursday 10 a.m. to 11 p.m., continuing through Oct. 2. $19.99; $15.99 for ages 3 to 6, seniors 60 and older and the disabled; ages 2 and younger free. Concert tickets, $10-$40. Richmond Raceway Complex, 600 E. Laburnum Ave., Richmond. 800-588-3247.

USED BOOK SALE -- Friday-Saturday 10 to 3. Mount Vernon Unitarian Church, 1909 Windmill Lane, Alexandria. 703-765-5950.

FLEA MARKET -- Saturday 9 to 2. College Park United Methodist Church, 9601 Rhode Island Ave., College Park. 301-474-7874.

COMMUNITY FAIR -- Saturday 9 to 3. Books, jewelry, arts & crafts, international food, entertainment and more, in a benefit for hurricane victims. National Presbyterian Church, Van Ness and Nebraska NW. 202-244-5558.

CLEARWATER NATURE FAIR -- Saturday 10 to 2. Hikes, animal shows, face painting, music and an appearance by Washington Nationals' mascot, Screech. Free, but performance by Blue Sky Puppet Theater is $2 (call 301-583-2665). 11000 Thrift Rd., Clinton. 301-297-4575.

OLD TOWN ALEXANDRIA HOMES Tour, Saturday 10 to 3. Tour eight 18th-century homes, in a benefit for Inova Alexandria Hospital. $30, available at the Arcade (320 King St.), the Lyceum (210 S. Washington St.) and Twig Thrift Shop (106 N. Columbus St.). 703-887-7883 or 703-461-3310.

MASON DISTRICT PARK FALL Festival, Saturday 10 to 4, with crafts, puppet shows, moon bounce, pony rides and entertainment. Free. 6621 Columbia Pike, Annandale. 703-941-1731.

APPLE FESTIVAL -- Saturday 10 to 4. Crafts, storytelling, music, boat rides, puppet shows and more. $6 per vehicle. Piney Run Nature Center, 30 Martz Rd., Sykesville. 410-795-6043 or 410-795-5165.

YARD AND BAKE SALE -- Saturday 10 to 4. Twelfth Street Christian Church, 1812 12th St. NW. 202-265-4494.

YARD SALE -- Saturday 10 to 4 and Sunday noon to 4. Christ Lutheran Church, 5101 16th St. NW. 202-829-6727.

"UNIVERSAL SOLDIER" ENCAMPMENT -- Saturday 10 to 5 and Sunday 10 to 3. Displays and demonstrations of war materials and tactics from Roman to modern times. Fort Washington Park, 13551 Fort Washington Rd., Fort Washington. $5 per vehicle. 301-763-4600.

ST. PHILIP'S CHURCH FALL FESTIVAL -- Saturday 10 to 6:30. Moon bounce, games, pony rides, petting farm, arts and crafts, bake sale and music by King's Park German Band. 7500 St. Philip's Court, Falls Church. 703-573-3808.

MARYLAND RENAISSANCE FESTIVAL -- Open Saturday and Sunday from 10 to 7, continuing through Oct. 23. A replica of a 16th-century English village, with singers, musicians, jugglers, magicians and other performers on 10 stages; displays by more than 140 artisans; jousting tournaments; and food vendors. $17, seniors $15, ages 7 to 15 $8 (younger free). On Crownsville Road off Route 450, Crownsville. 800-296-7304.

COMMUNITY FUNFEST -- Saturday 11 to 3. Games, pie tasting, dunk tank and bake sale, plus Irish dancing, puppet show and more. Hughes United Methodist Church, 10700 Georgia Ave., Wheaton. 301-949-8383.

NORTH CAPITOL COMMUNITY Transportation Safety Fun Day, Saturday 11 to 4. Information booths and demonstrations, bike rodeo, face painting, games and more. Free. Associates for Renewal in Education, 45 P St. NW. 202-483-9424.

IONA HARVEST OPEN HOUSE -- Saturday 11 to 4. Pumpkin decorating, face painting, arts and crafts show and bake sale, plus "Trash or Treasure?" appraisals. Free. Isabella Breckinridge Center, 4125 Albemarle St. NW. 202-966-1055.

GRAPE HARVEST FESTIVAL -- Saturday-Sunday 11 to 5. Wine tasting, boat rides, entertainment, children's activities and tours. $12; ages 20 and younger, $8; ages 6 and younger, free. Tarara Winery, 13648 Tarara Lane, Leesburg. 703-771-7100.

MIDDLE EASTERN BAZAAR -- Saturday 11 to 11. Food, activities and music. Our Lady of Lebanon Maronite Church, 7164 Alaska Ave. NW. 202-829-5554.

COLLEGE PARK AVIATION MUSEUM Open House, Saturday noon to 4. Visit the restoration facility to see the reproduction of a 1911 Curtiss Pusher Airplane. $4; seniors, $3; ages 2-18, $2. 1985 Cpl. Frank Scott Dr., College Park. 301-864-6029.

BOOK SALE -- Saturday-Sunday noon to 4. Cleveland Park Library, 3310 Connecticut Ave. NW. 202-282-3072.

TASTE OF ITALY -- Saturday noon to 6. Music, dancing, tours, grape stomping, food and wine tasting and children's activities. $10. Windham Winery, 14727 Mountain Rd., Purcellville. 540-668-6464.

CALVERT COUNTY FAIR -- Open Wednesday from 4 to 9 and Thursday 9 a.m. to 10 p.m., continuing through Oct. 2. $5; ages 11 and younger free. 140 Calvert Fair Dr., Barstow, Md. 410-535-0026.

SEWING & QUILTING EXPO -- Thursday 10 to 6, through Sept. 30. Classes and workshops, demonstrations, fashion shows and booths. $10; ages 12 and hunger free; classes additional. Dulles Expo & Conference Center, 4368 Chantilly Shopping Center, Chantilly. 703-378-0910.