What's Doing

LIVE BUTTERFLY SHOW -- Friday through Sunday 10 to 4. Butterflies fly freely in an indoor garden of nectar plants. $4.50, ages 3 to 12 $3.50. Brookside Gardens, 1800 Glenallan Ave., Wheaton. 301-962-1400.

RV SHOW -- Friday 10 to 7, Saturday 10 to 7, Sunday 10 to 6. Displays of recreational vehicles and related goods. $7, under 12 free. Maryland State Fairgrounds, York Road at I-83, Timonium. 410-561-7323.

AAUW USED BOOK SALE -- Friday 10 to 8, Saturday 10 to 6, Sunday 12:30 to 4. Sponsored by the American Association of University Women at the McLean Community Center, 1234 Ingleside Ave., McLean. 703-726-6470.

"SPIRIT OF AMERICA" -- Friday at 10:30 and 7:30, Saturday at 2 and 7:30. A musical salute to the history of the United States by the U.S. Army Military District of Washington. Free, but tickets required. MCI Center, 601 F St. NW. 202-628-3200.

GREEK FESTIVAL -- Friday 11:30 to 9, Saturday and Sunday noon to 9. Entertainment, crafts, exhibits, food vendors. Sts. Constantine and Helen Greek Orthodox Church, 4115 16th St. NW. 301-667-9143.

IRISH FESTIVAL OF BALTIMORE -- Friday 6 to 11, Saturday noon to 11, Sunday noon to 6. Traditional music and dancing, exhibits, crafts fair, food vendors. $10, ages 12 and younger free. Fifth Regiment Armory, Howard and Preston streets, Baltimore. 410-344-0242 or 877-225-8466.

"D.C. SHORTS FILM FESTIVAL" -- Friday at 9 p.m.; Saturday at 3, 6 and 9; and Sunday at noon. Screenings of five different programs of films, from 55 seconds to 30 minutes long, and related events. $12 per screening; all-access pass $75. Landmark's E Street Cinema, 555 11th St. NW. 202-393-4266.

RUMMAGE SALE -- Saturday 9 to 2. College Park United Methodist Church, 9601 Rhode Island Ave., College Park. 301-345-1010.

"D.C. BIG FLEA" -- Saturday 9 to 6, Sunday 11 to 5. Flea market with about 1100 booths of furniture, glass, silver, china and other goods. Dulles Expo Center, Willard Road off Route 28, Chantilly. 757-961-3605 or 703-378-0910.

USED BOOK SALE -- Saturday 10 to 3. Georgetown Library, Wisconsin Avenue and R Street NW. 202-282-0220.

CIVIL WAR ENCAMPMENT -- Saturday 10 to 4. Living history portrayals, demonstrations, drills, exhibits commemorating the 143rd anniversary of the Battle of Chantilly. Ox Hill Battlefield Park, West Ox Road and Monument Drive, Fairfax. 703-830-7713.

CRAFTS FAIR -- Saturday 10 to 4, Sunday 11 to 3. About 80 exhibitors. $3, under 12 free. Robinson High School, 5035 Sideburn Rd., Fairfax. 703-425-1937 or 703-385-2649.

RESTON MULTICULTURAL FESTIVAL -- Saturday 10 to 5. Musicians, dancers and other performers from varied ethnic traditions. Sponsored by the Reston Community Center outdoors at Lake Anne Village Center, Reston. 703-476-4500.

CRAFTS FAIR -- Saturday and Sunday 10 to 5. Crafts, clothing and jewelry by about 80 exhibitors. $7. Ernst Community Cultural Center, Northern Virginia Community College, 8333 Little River Tnpk., Annandale. 703-883-4760.

"SHAKER FOREST" -- Saturday 10 to 6, Sunday 10 to 5:30. Crafts fair, entertainment, food vendors, living history portrayals. $7, ages 10 and under free. Seneca Creek State Park, 11950 Clopper Rd., Gaithersburg. 866-972-1244.

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 or 410-266-7304.

CIVIL WAR ENCAMPMENT -- Saturday and Sunday 11 to 4. Camp life demonstrations, living history portrayals, banjo music. Prye House Field Hospital Museum, Antietam National Battlefield, 18906 Shepherdstown Pike, Sharpsburg. 301-695-1864.

OLD WORLD FESTIVAL -- Saturday 11 to 5. Greek, Lebanese and Eastern European music, foods, games. Harris Pavilion, 9201 Center St., Manassas. 703-491-1998.

UKRAINIAN FESTIVAL -- Saturday and Sunday noon to dusk. Music and dancing, crafts, foods. St. Andrew's Ukrainian Orthodox Cathedral, 15100 New Hampshire Ave., Silver Spring. 301-593-5316.

BENEFIT PARTY -- Saturday at 7. Dance concert by local troupes, food, silent auction. $100 per person, $150 per couple. Dance Place, 3225 Eighth St. NE. 202-269-1600.

BENEFIT PARTY -- Saturday at 8. Dancing with music by Daryl Davis, silent auction, foods from two dozen restaurants. $50, for the Partnership for Warrenton Foundation. Outdoors at the courthouse in Old Town Warrenton. 540-349-8606.

NATIVE INUIT ART SALE -- Sunday 9 to 3. Inuit/Eskimo sculpture in stone, bone and ivory by Canadian and Alaskan artists. Marriott Hotel, 5151 Pooks Hill Rd., Bethesda. 301-897-9400.

"FIESTA D.C." -- Sunday 10 to 7. Entertainment on three stages, health fair, exhibits, community information fair, food vendors. Cardozo High School, 13th Street and Florida Avenue NW. 202-232-4393.

FIRE APPARATUS SHOW -- Sunday 11 to 2. Displays of antique fire equipment, fire safety tips, food vendors. Awards ceremony at 2. A benefit for the D.C. Fire Fighters Burn Foundation. Armed Forces Retirement Home, Rock Creek Church Road and Upshur Street NW. 202-635-8500.

ITALIAN FESTIVAL -- Sunday 11 to 6. Traditional music, dancing, crafts, foods. Villa Rosa Home, 3800 Lottsford Vista Rd., Mitchellville. 301-459-4700.

"BARKTOBERFEST" -- Sunday noon to 6. Music, exhibits, food vendors, animal adoptions. Sponsored by Friends of Homeless Animals at Melodee Music Amphitheater, 46077 Lake Center Plaza, Sterling. 703-450-7318.

HISPANIC FESTIVAL -- Sunday noon to 6. Entertainment, crafts, carnival games and rides, exhibits, food vendors. Lane Manor Park, University Boulevard and West Park Drive, Adelphi. 301-445-4500.

"AN AFTERNOON OF REGENCY Romance" -- Sunday at 1, romance authors Kathryn Caskie, Kate Dolan, Janet Mullany, Diane Perkins, Mary Jo Putney and Lucia St. Clair Robson read from their books, with refreshments and mansion tours. $5. Riversdale House Museum, 4811 Riverdale Rd., Riverdale Park. 301-864-0420.

USED BOOK SALE -- Thursday 1 to 5, and through Sept. 24. Mount Vernon Unitarian Church, 1909 Windmill Lane, Alexandria. 703-765-5950.