ALL-BREED DOG SHOW -- Friday-Sunday from 8 to 6, sponsored by Old Dominion Kennel Club of Northern Virginia and Warrenton Kennel Club. $3. Morven Park International Equestrian Center, 41793 Tutt Lane, Leesburg. 301-948-3931 or 703-406-2474.
CALVERT COUNTY FAIR -- Open Friday and Saturday from 9 a.m. to 10 p.m., Sunday from 10 to 6. $5; ages 11 and younger free. 140 Calvert Fair Dr., Barstow, Md. 410-535-0026.
USED BOOK SALE -- Friday from 10 to 5, Saturday from 10 to 4:30, Sunday from noon to 3:30. Reston Regional Library, 11925 Bowman Towne Dr., Reston. 703-689-2700.
SEWING & QUILTING EXPO -- Friday from 10 to 6, Saturday from 10 to 5. 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.
VIRGINIA STATE FAIR -- Friday and Saturday from 10 to midnight, Sunday 10 a.m. to 11 p.m. $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.
ANTIQUES SHOW & SALE -- Friday from 11 to 7 and Saturday from 10 to 5. Features 24 dealers, plus piano music by Mark Hanak. $6 for both days. Concord-St. Andrew's United Methodist Church, 5910 Goldsboro Rd., Bethesda. 301-654-6049.
CHILDREN'S CONSIGNMENT SALE -- Saturday from 8 to 1. Christ United Methodist Church, 8285 Glen Eagles Lane, Fairfax Station. 703-690-3401.
YARD SALE -- Saturday from 8 to 2. Free. Belle View Condominiums, 1200 Belle View Blvd., Alexandria. 703-765-8775.
FAMILY FAIR -- Saturday from 9 to 1. Moon bounce and children's games, with clothing, books, toys and more for sale. Free. St. Thomas Episcopal Church of McLean, 8991 Brook Rd., McLean. 703-442-0330.
AMISH QUILT & CRAFT SALE -- Saturday from 9 to 5. Free. Dulles Expo Center, South Hall, 4320 Chantilly Shopping Center, Chantilly. 717-786-8487.
AUTUMN CONSERVATION FESTIVAL -- Saturday and Sunday from 10 to 3. Tour the National Zoo's Conservation and Research Center in Front Royal and learn about endangered species at the Center; festival also includes live music, hayrides and more. $25; reservations required. Tickets and parking passes can be bought at the Front Royal/Warren County Visitor's Center (414 E. Main St., Front Royal; 800-338-2576) or the Winchester/Frederick County Visitor Center (1360 S. Pleasant Valley Ave., Winchester; 800-662-1360).
SECOND CHANCE WILDLIFE CENTER Open House, Saturday from 10 to 3. Tour the center, learn about wildlife rehabilitation, listen to folk singer Steve Gelman from 1 to 2. Free. 7101 Barcelona Dr., Gaithersburg. 301-926-9453.
YFT COUNTRY FAIR & AUCTION -- Saturday from 10 to 4. Rides, exhibits, children's activities, auction and more. $10; ages 17 and younger $5; pre-schoolers, free. Youth for Tomorrow Residential Group Village, 11835 Hazel Circle Dr., Bristow. 703-631-3360.
USED BOOK SALE -- Saturday from 10 to 4. Palisades Library, 4901 V St. NW. 202-416-7651 or 202-966-2873.
ST. FRANCIS COUNTRY FAIR -- Saturday from 10 to 4. Quilt raffle, food, games and children's activities. Free. 9220 Georgetown Pike, Great Falls. 703-757-4724.
"CRAFTY BASTARDS" CRAFT FAIR -- Saturday from 10 to 5. The Washington City Paper sponsors its second annual "alternative craft" fair, with 100 vendors. Free. Marie Reed Learning Center, 18th and Wyoming streets NW. 202-332-2100, ext. 230.
DEL MAR DEPRESSION GLASS CLUB'S Show and Sale, Saturday from 10 to 5, Sunday from 10 to 4. $4. Duval High School, 9880 Good Luck Rd., Lanham. 301-565-2361 or 410-263-4192.
GATHERSBURG ANTIQUE & Collectible Extravaganza, Saturday from 10 to 5, Sunday from 10 to 4. $5.Montgomery County Fairgrounds, 16 Chestnut St., Gaithersburg. 301-649-1915.
CORN MAZE IN THE PLAINS -- Saturday and Sunday from 10 to 6, through Nov. 6. There is a 2.5-mile corn maze, plus a children's play area, hayrides, food and more. $7; ages 5 to 12, $6; ages $ and younger, free. Off Route 245 (Old Tavern Road), the Plains. 540-456-7339.
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.
CAPITAL BOOKFEST -- Saturday from 10 to 7. Inaugural festival features readings, author appearances, panel discussions, poetry open mic for teens and more. Parking lot behind Borders, 931 Capital Centre Blvd., Largo. 703-371-4325 or 301-499-2173.
FALL GARDEN DAY -- Saturday from 11 to 3. Celtic-inspired activities, including music, storytelling, games, crafts and more. $12; ages 18 and younger free. Tudor Place, 1644 31st St. NW. 202-965-0400.
DULLES DAY FAMILY FESTIVAL -- Saturday from 11 to 4, with aircraft on display, a car show, live music, games, food, Plane Pull and new Kids' Bus Pull. Free. Dulles Airport, behind Cargo Building 5, 45020 Aviation Dr., Sterling. 703-359-4301.
MCLEAN HARVEST FESTIVAL -- Saturday from 11 to 4. Children's entertainment, dancing, crafts, pony rides and more. McLean Community Center, 1234 Ingleside Ave., McLean.
RESCUE DAY 2005 -- Saturday 11 to 4. Safety demonstrations and supplies, moon bounce, food and station tours. Free. Bethesda-Chevy Chase Rescue Squad, 5020 Battery Lane, Bethesda. 301-652-0077.
HARVEST FESTIVAL -- Saturday from 1 to 4. Farm history hunt, live music, sheep dog demonstrations and more. $10 per vehicle. Agricultural History Farm Park, 18400 Muncaster Rd., Derwood. 301-924-4141.
MIDDLETOWN HERITAGE DAYS Festival, Saturday from 11 to 4:30, Sunday from noon to 5. Dancing, live music, children's activities, Civil War Reenactment, home tours and more. Middletown Volunteer Fire Company carnival grounds, Franklin St., Middletown. 301-371-6171 or 301-371-9429.
BARRACKS ROW FEST -- Saturday from 11 to 5. Street festival will feature art and vendors, children's activities and live music. Eighth street between M and Pennsylvania SE. 202-544-3188.
SOLAR HOMES TOUR -- Saturday and Sunday from 11 to 5. Tour more than 30 homes in Maryland, Virginia and Washington, DC, that use passive and active solar energy. Tour brochure and maps are free at REI Outfitters, Olsson's Books & Records and other retailers, and on www.solartour.org. 202-564-1088 or 240-687-1678.
50th ANNUAL POTOMAC COUNTRY HOUSE Tour, Saturday and Sunday from 11 to 5. Tour homes and gardens in Potomac, to benefit more than 25 local charities. Tickets are $20 in advance, $25 same day. St. Francis Episcopal Church, 10033 River Rd., Potomac. 301-365-2005.
FREDERICK'S OKTOBERFEST -- Saturday from noon to 10, Sunday noon to 6. German music, dancing, food, Biergarten, children's activities and more. $5; ages 11 and younger, free. Frederick Fairgrounds, 797 E. Patrick St., Frederick. 301-663-8811.
COLONIAL GAMING NIGHT -- Saturday at 7:30. Period re-enactors will act as dealers while guest compete at original and modern games of chance. Reservations required; fee TBA. Darnall's Chance House Museum, 14800 Governor Oden Bowie Drive, Upper Marlboro. 301-952-8010.
TURKISH FESTIVAL -- Sunday from 10 to 6. Folk dancing, music, fortune-telling, art and textile vendors, children's activities and food. Pennsylvania Avenue between 12th and 14th streets NW. 703-625-7344.
"THE SHIP'S COMPANY" -- Sunday from noon to 4. Living history portrayal of a Civil War ship's crew, plus related exhibits and models. For Ward Museum & Historic Site, 4301 W. Braddock Rd., Alexandria. 703-838-4848.
NSO DECORATORS' SHOW HOUSE -- Sunday from noon to 5, Monday-Thursday from 10 to 3, through Oct. 31. Tickets are $15 in advance, $20 at the door. 8295 Alvord St., McLean. 202-416-8727.
WASHINGTON MUSHROOM FAIR -- Sunday from noon to 5. Learn about mushroom cultivation, cooking, identification and more. Free. Brookside Gardens Visitors Center, 1800 Glenallen Rd., Wheaton. 301-907-3053.
COX HISPANIC HERITAGE FESTIVAL -- Sunday from 1 to 6. Featuring music, children's activities and food. Free. Herndon Town Green, 777 Lynn St., Herndon. 703-480-4775.
HOME & GARDEN TOUR -- Thursday from 10 to 6, sponsored by the Cedar Run Garden Club. Five houses on display. $20; tickets available at Marshall Bank, 615 Branch Dr., Warrenton. 540-428-2099.
HAUNTED DECATUR HOUSE TOURS -- Thursday at 6:15 and 7:15, continuing through Oct. 27. Tour the house by candlelight and hear stories about the historic home. $7.50; students, $6. 1610 H Street NW. 202-842-0920, ext. 239.