FRUIT OF THE VINE

Get into the spirit at the Berrywine Plantations October Wine and Bull Roast Festival noon to 6 Saturday and Sunday. Besides tours of the winery and tastings of holiday libations, there'll be country music, arts and crafts and a roast beef dinner. Parking and tours are $2. Take I-270 20 miles north to Rte. 109 and follow the signs. For more information call 301/662-8687.

Vintage wines and vintage cars are in store 11 to 5 Saturday at the Prince Michel Vineyards Oktoberfest in Leon, Virginia, 10 miles south of Culpeper. There'll be a parade of German cars (including a '56 Mercedes Gullwing), a "Paint the Pumpkin" contest and magic show for kids, dance by the German Schuplattler cloggers and assorted Oktoberfoods for sale. It's $7 and that includes winery tours and tastings. 703/547-3709.

REST OF THE BEST

There's an International Street Festival to celebrate the reopening of the International Youth Hostel noon to 6 Saturday on 11th between K and L NW. 783-0717 . . . the seventh annual Great American Civil War Book, Paper and Image Fair is 9 to 5 Saturday (there's a preview 6 to 9:30 Friday). It's $5 for both days, $3 for Saturday at the Elks Lodge, 8421 Arlington Blvd. (U.S. 50) in Fairfax. 631-0884 . . . the D.C. Antiques Fair boasts 185 dealers noon to 9 Friday and Saturday and noon to 6 Sunday at the D.C. Armory; $3.75 all three days, under 16 free. 547-9215 . . . It's a small world at the Tysons Corner Dollhouse and Miniature Show 10 to 5 Saturday and Sunday at the Ramada Hotel, 7801 Leesburg Pike (at Beltway Exit 10). It's $3, $1 for kids under 12. 978-5353 . . . the Dupont Circle 20th Annual House Tour from 1 to 5 Sunday takes you through 10 homes and ends with tea; buy tickets ($10) at the Columbia Historical Society (1307 New Hampshire Ave. NW) or Indonesian Embassy (2020 Massachusetts Ave. NW), both of which are on the tour. 387-5312.

A LITTLE MUSIC

The Polish Chamber Orchestra performs works by Haydn, Shostakovich and others at the National Academy of Sciences, 21st and C NW at 8 Saturday. Free. Call 334-2436 before 5 Friday . . . Chinese opera star Hong-Jun Guan performs selections from the Beijing Opera at 4 Saturday with a little help from six area high school students at the International Center of the Arthur M. Sackler Gallery, 1050 Independence SW. Free. 357-4886 for reservations . . . the Dumbarton Concert Series at Dumbarton Church, 3133 Dumbarton St. NW, begins at 8 Saturday with the American Chamber Players. $10. 965-2000 . . . The Levine School of Music and Bethune Archives for Black Women's History open their joint series with two free concerts by soprano Cathryn Frazier-Neely; at 8 Friday at the Levine School (1690 36th St. NW) and at 3 Sunday at the Bethune Museum (1318 Vermont Ave. NW). 337-2227 . . . The Navy Band's Eastern Trombone Workshop is at 8 Friday, 9 a.m. to 10 p.m. Saturday and 2 Sunday with concerts and jam sessions at the Sail Loft, Building 112 at the Navy Yard at Sixth and M SE. Free. 433-2394.

OUT AND ABOUT

The 18th annual Cleveland Park Block Party and Silent Auction

is 11 to 4 Saturday at the Macomb Play- ground, Macomb and 34th NW. If the price is right, bidders can own Redskin tickets (it's a soft market), a Victorian dollhouse or a personalized tour of the Capitol dome with Rep. John McKee Spratt Jr. (D-SC). Plus there'll be food, crafts and white elephant sales. Free. 282-2199.

At the "Salute to Age-Old River Crafts" autumnfest at Anacostia Park 10 to 6 Saturday, folk art demos will include doll-making, model-boat carving and basket weaving. Plus blues and gospel with vocalists Sedatrius Brown, Nap Turner and Jerry Washington and guitarist Bill Harris, among others. Admission to the park, between the 11th Street and Pennsylvania Avenue bridges, is free. 387-8292 or 673-7660.

Harvest Days at Sully Plantation promise bushels of family fun 11 to 5 Saturday and Sunday, including tours of the 18th-century residence, open-hearth cooking, craft demonstrations and cider pressing. Irish band Soda Bread, folk duo Side by Side and hammered-dulcimer player Cass Harris perform. It's $4, $2 for kids 3 to 15. Sully is on Rte. 28, not quite a mile north of U.S. 50 in Chantilly. 437-1794.

Over toward the Blue Ridge, the townsfolk of Aldie (pop. 100) host their 13th annual fall festival 9 to 5 Saturday. Along with a Civil War encampment are crafters (broom-, furniture- and basket-making) and continuous bluegrass and country music. Free. Take U.S. 50 six miles east of Middleburg. 478-1856 or 703/327-4246.

ALL ABOARD

You can ride a trolley any weekend at the National Trolley Museum, but at 3 Sunday, little ones can also see a performance of "The Land of Oz" -- in which the Emerald City is peopled by the Montgomery Ballet Company. It's free at the museum, on Bonifant Road between Layhill and New Hampshire, north of Wheaton. 593-5060 or 330-8444.

TASTEFUL ENCOUNTERS

Washington Harbour celebrates its one-year birthday with "Taste of the Harbour," 5 to 9 Saturday, as seven restaurants on the riverfront offer specialties for $1 a taste. Since you can't live by samples alone, music will be provided by pop duo Penguin and the Blues Alley Big Band. It's free at 31st and K NW. Proceeds benefit the Hospital for Sick Children. Call 944-4135.

Also on the birthday beat, the Navy Museum celebrates its 25th year with a party noon to 4 Saturday; storytellers, the U.S. Navy Band's Sea Chanters, ship-modelmaking demonstrations and watercolor tatooists are among the attractions. It's free at Ninth and M streets SE. Call 433-4882.

12TH ANNUAL CRAFT FAIR IN GAITHERSBURG

The 12th annual National Craft Fair is 10 to 6 Friday through Sunday at the Montgomery County Fairgrounds in Gaithersburg. More than 400 crafters will sell their work and demonstrate glass-blowing, basket-weaving, metal-sculpting and more. There'll even be a "You Can Try It " pottery workshop. Arlo Guthrie performs at noon and 3 Saturday; Jerry Jeff Walker and David Bromberg pick up the beat noon and 3 Sunday. Come hungry; plenty of vittles'll be for sale. It's $5, free for kids under 12. 670-0377.