What's Doing

NSO DECORATORS' SHOW HOUSE -- Friday 10 to 3, Saturday-Sunday from noon to 5, and Monday-Thursday from 10 to 3, through Oct. 31. Tour a 10,000-square foot Neoclassical home redecorated by dozens of designers in this 33rd annual benefit for the National Symphony Orchestra. $15 in advance, $20 at the door. At 8295 Alvord St., McLean; free parking with shuttles at satellite lots. 202-416-8149.

USED BOOK SALE -- Friday and Saturday 10 to 5. Chantilly Library, 4000 Stringfellow Rd., Chantilly. 703-502-3883.

"OPERATUNITY BOUTIQUE" -- Friday 10 to 8, Saturday 10 to 6. Displays of jewelry, home and garden items and other goods. A benefit for the Washington National Opera. $10. 3005 Massachusetts Ave. NW. 202-295-2437.

SCHOOL BAZAAR -- Friday 6 to 10, Saturday 8 a.m. to 1 and 6 to 10. Used books and toys, food vendors, moon bounce. St. James Catholic School, 830 W. Broad St., Falls Church. 703-533-1182.

CONSIGNMENT SALE -- Friday 7 to 9 p.m., Saturday 8 to 11 a.m. Baby, child and maternity goods. Redeemer Lutheran Church, 1545 Chain Bridge Rd., McLean. 703-356-3567.

USED BOOK SALE -- Saturday 8 to 2. Sponsored by Parole Rotary Books for International Goodwill at 1325 Marlboro Rd., Lothian. 410-293-6865.

FLEA MARKET -- Saturday 9 to 1. Glenn Dale Fire Association, 11900 Glenn Dale Blvd., Glenn Dale. 301-853-6723.

CHURCH BAZAAR -- Saturday 9 to 3. Mountain View United Methodist Church, 11501 Mountain View Rd., Damascus. 301-831-3748.

BAZAAR -- Saturday 10 to 2. Emmanuel United Methodist Church, 11416 Cedar Lane, Beltsville. 301-937-7114.

BAZAAR -- Saturday 10 to 4. St. Pius X Church, 14720 Annapolis Rd., Bowie. 301-262-1382 or 301-262-6144.

AAFSW BOOK FAIR -- Saturday- Sunday 10 to 4. Used books, art objects, stamps, coin. Sponsored by the Associates of the American Foreign Service Worldwide at the State Department, 23rd and C streets NW. 202-223-5796.

FLEA MARKET -- Saturday 10 to 4. St. Pius X Church, 14720 Annapolis Rd., Bowie. 301-262-1382 or 301-262-6144.

DUPONT CIRCLE ARTS FESTIVAL -- Saturday 10 to 4. Displays by about 40 artists, entertainment. Church of the Pilgrims, 22nd and P NW. 202-387-6612.

HOME AND FURNISHINGS SHOW -- Saturday 10 to 6, Sunday 10 to 5. Displays by vendors of home-related goods and services. $8, ages 16 and younger free. Discovery Sports Center, 14501 Schaeffer Rd., Boyds. 301-294-8550.

MARYLAND RENAISSANCE FESTIVAL -- Open Saturday and Sunday 10 to 7. 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.

"MAGIC ROME" -- Sunday at 7, a benefit for scholarship programs of the Italian Cultural Society of Washington, with a performance by Il Gruppo Teatro Essere. $30 to $45, students $15. Gaston Hall, Georgetown University, 37th and O NW. 202-333-2426.