THIS TOUR'S FOR YOU

See the house that beer built, or that beer magnate Christian Heurich built in 1894: the 31-room mansion, now home of the Columbia Historical Society. Candlelight tours of the house and decorations are 5 to 7 Saturday and Sunday, while the Close Enough Barbershop Quartet and Capitol Hill Consort perform. It's $2.50; free for under 5 at 1307 New Hampshire Ave. NW. No reservations needed but this is a popular event; go early. Call 785-2068 for more information.

VOICES OF HANUKAH

The Jewish Folk Arts Society celebrates Hanukuh with the New York-based women's klezmer band Klez- Meydlekh and Baltimore's Heritage Trio at 8 Saturday at Tifereth Israel Congregation, 16th and Juniper NW. Admission is $10, $8 for students and seniors and includes a party afterwards. Call 230-1369.

ALL TOGETHER NOW . . .

Here's plenty to sing about (if not along with):

The Navy Band's free "Yuletide Festival" concert is complete with Santa and an audience sing-along at 3 Sunday (doors open at 2) at Constitution Hall, 18th and D NW. 433-2525.

The National Singers sing at 7:30 Sunday at the Round House Theater -- and then it's your turn. At 12210 Bushey Dr. in Wheaton; $5. 468-4234.

The Vienna Choral Society invites all voices to sing at St. Mark's Catholic Church, 9970 Vale Rd., Vienna, at 3 Sunday. Free. Call 938-5640.

And finally, if you don't feel like singing, the National Symphony Orchestra joins with the Oratorio Society for performances of Handel's "Messiah" at 8:30 Friday and Saturday and 2 Sunday in the Kennedy Center Concert Hall. Tickets are $5 to $29. 254-3600.

HOME BAKIN'

Hungry for something artistic? Rockville's Strathmore Hall Arts Center is having an exhibition and silent auction of gingerbread houses with more than 50 edible edifices included. It's 10 to 3 Friday at 10701 Rockville Pike. Free. Call 530-0540.

DOWN ON THE FARM

Claude Moore Colonial Farm's annual 18th- century Christmas Wassail is 1 to 4:30 Sunday. After the music, dance and demonstrations, visitors can help make the noise -- bring your own pots and drums and bells -- that the apple growers swear will improve next year's harvest. It's $2, $1 for kids under 13 at 6310 Georgetown Pike, McLean. 442-7557.

HOLIDAY HAPPENINGS AT THE KENNEDY CENTER

The Kennedy Center's usual cultural offerings are unusually (and seasonally) inexpensive this weekend: Hear the National Symphony, conducted by Fabio Mechetti, in the Concert Hall with a twist -- the Magic Circle Mime Company of New York -- performing Benjamin Britten's "Young Person's Guide to the Orchestra" at 11 and 1 Saturday. Tickets are $3 to $5. Meanwhile, free continuing activities in the Grand Foyer include Potomac Chinese School Dancing Group (9:30 and noon Saturday), piano duet by the Gold Dust Twins (5:30 Saturday), the Festival Choral Society (6:30 Saturday), the Montgomery Ballet Company's "Land of Oz" (11:30 Sunday) and the Kathy Hart Gray Dance Theatre (at 6 Sunday). 254-3600.

O CHRISTMAS TREES!

The Smithsonian knows there's nothing like decorating a fresh Christmas tree -- and that's exactly what they did, 10 times, for the 11th annual "Trees of Christmas" exhibit at the National Museum of American History. All but one of the trees will be decked in handmade ornaments; the last is made entirely of felt. The show continues until January 6. 357-2700.

REST OF THE BEST

The Baltimore Choral Arts Society performs at 3 Sunday at the Walters Art Gallery, 600 North Charles St., Baltimore. Admission to museum and concert is free. 301/547-9000 . . . the Arlington Symphony's free Christmas concert is at 3 Sunday in the Kenmore School Auditorium (200 South Carlyn Spring Rd.) in Arlington. 528-1817 . . . The 18th-century manor of Belle Grove (a mile south of Middletown, Virginia, near the intersection of I-66 and I-81) celebrates with holiday music, candlelight tours and a Christmas shop 6 to 9 Saturday and 1 to 9 Sunday. 703/869-2028 . . . Annapolis glows at the Eastport Yacht Club's fifth annual Holiday Yacht Parade of Lights beginning at 6 Saturday when more than 50 bejeweled boats take off from the harbor entrance. Free. 301/263-2603 or 301/263-8118.

A LITTLE COUNTRY

Learn a bit of country dancing and see the Dance West Dancers and raise money for Toys for Tots and Mothers Against Drunk Driving starting at 4 Saturday at Country Junction in Rockville. After the last hourly dance lesson at 7:30 comes the show by Dance West Dancers, three-time National Country Dance Champions. It's $6 per class, $7 for the last class and show, plus a small unwrapped toy at Country Junction, 11410 Rockville Pike. 231-5761.

HOLIDAY HAPPENINGS

The Washington Cathedral Choir of Boys and Men, under director Douglas Major, performs at 4 Sunday in the nave of the cathedral at the corner of Woodley and Wisconsin NW. Free. 537-6247.

The Gala Hispanic Theater presents a "Navidad Ninos Bolivianos" Christmas concert with Latin American folk music and dance at 8 Saturday at the theater (1625 Park Rd. NW). It's $10 at the door; proceeds benefit needy children in Bolivia. 234-7174.

"MAGIC" MUSICAL

"Santa's Magic Christmas," a sort of new wave "Nutcracker," is the D.C. Recreation Department's annual Christmas musical. This year's includes more than 80 dancers, singers and musicians, including the Michael Jacksonesque character Slick Mick. Admission is $2; showtimes are at 1 and 7 Friday and Saturday, 7 Sunday and 1 and 7 Monday at Howard University's Cramton Auditorium, Sixth and Fairmont NW. 636-7199 or 673-7660.