Ongoing "HOLIDAYS DURING World War II," an exhibit exploring the food, decorations and customs of small town America during the war years, on Sundays from 1 to 5 through Dec. 22 at the Greenbelt Museum, 10-B Crescent Rd., Greenbelt. 301-507-6582 or 301-474-1938.

CHRISTMAS GARDEN -- A tradition brought to America by German immigrants, the Christmas garden is a miniature holiday landscape. The Arbutus Volunteer Fire Department opens its Christmas garden to visitors weeknights from 6 to 8:30, weekends from 11 to 8:30, Christmas Eve, New Year's Eve and New Year's Day from 11 to 4. Open through Jan. 4. 5200 Southwestern Blvd., Baltimore. 410-242-6601.

Friday

"FESTIVAL OF TREES" -- Holiday show with decorated trees and wreaths, sponsored by the Leonardtown Volunteer Rescue Squad, Friday from 9 to 9, Saturday from 9 to 5 and Sunday from noon to 5 in the Bell Motor Co. Showroom on Washington Street in Leonardtown, Md. $1; children 11 and younger free. 301-475-9791.

RESTON PARADE -- Reston holds its Holiday Parade on Friday at 11 on Market Street in the Reston Town Center, 11921 Freedom Dr. Reston. Friday at 6, Santa arrives for a tree lighting ceremony. 703-709-8500.

NORWEGIAN CHRISTMAS -- The Royal Norwegian Embassy is sponsoring the following events: A Holiday Model Train in a Norwegian landscape, Friday from noon to 7 in the West Hall of Union Station, 50 Massachusetts Ave. NE. The train will run Mondays-Saturdays from 10 to 7 and Sundays noon to 6 though Jan. 4. On Thursday at 5:30, the Norwegian ambassador, Knut Vollebaek, will light the Christmas tree, a gift from Oslo to Washington, in Union Station's Main Hall. Author Garrison Keillor and the Capitol Hill Chorale Group will also take part. The tree will be on display Jan. 1. 202-289-1908.

"FESTIVAL OF TREES" -- View hundreds of decorated trees Friday and Saturday from 10 to 9 and Sunday from 10 to 6 at the Cow Palace at the Maryland State Fairgrounds. $8, $4 children and seniors; sponsored by the Kennedy Krieger Institute. Take I-95 north to I-695 west to I-83 north to Exit 17/Padonia Road, bear right to Padonia Road and turn right onto Deereco Road in Timonium. 443-923-7300.

TREE LIGHTING with music, carriage rides, hay rides, caroling, Santa and more, Friday from 5 to 9 (rain date Saturday) on Washington Street in Leonardtown, Md. 301-475-9791.

TREE LIGHTING on Friday at 7 at Market Square, 301 King St., Alexandria. Caroling, hot chocolate and other entertainment. 703-883-4686.

Saturday

FRONT ROYAL celebrates the holidays with caroling, ice sculpting, music and period costumes on Saturday from 12:30 to 5:45 on Main Street. On Dec. 7, the Front Royal Christmas Parade takes place from 3 to 4:30 downtown. 540-631-0099.

Sunday

TREE LIGHTING -- Join Santa for a tree lighting Sunday from 4:30 to 6 at Waters House at Pleasant Fields, 12535 Milestone Manor Ln., Germantown. 301-762-1492.

Tuesday

HOLIDAY TOURS of the Beall-Dawson House, 103 W. Montgomery Ave., Rockville, Tuesday through Jan. 5. Tours are from noon to 4 daily, except Mondays. $3, $2 seniors and students, free for ages 5 and younger. 301-762-1492.

TREE LIGHTING on Tuesday at 7 at Brookside Gardens, 1800 Glenallan Ave. Wheaton. Free admission, but you can sponsor a light for $20, with proceeds benefitting the Montgomery Hospice. 301-279-2566.

HOLIDAY EVENING of Romanian music and refreshments on Tuesday at 6:30 at the home of the Romanian ambassador, Dumitry Ducaru, 2500 30th St. NW. $50; preregistration required. 202-369-1770.

Wednesday

TOUR THE KINGDOM of the Sweets, with the Snowflake Forest, the Candyland Lake and the Sugar Plum Tea Room, Wednesday through Dec. 21 at Ballet Petite, 4701 Sangamore Rd., Bethesda. Tours are Mondays, Wednesdays, Thursdays and Fridays from 10 to noon and 3:30 to 5:30; Saturdays 3 to 5 and Sundays noon to 2. Donations accepted. 301-229-6882.

Thursday

TREE LIGHTING with caroling, cider, cookies and other festivities Thursday from 5 to 8 at Baltimore's Washington Monument, Charles and Monument streets. Sponsored by the Maryland Historical Society. 410-685-3750.

Dec. 6

ST. ALBANS Christmas House Tour -- Tour five Georgetown homes decorated for the holidays Dec. 6 from 11 to 5 and Dec. 7 from 10 to 4. $30; shuttles run from the school at Wisconsin and Massachusetts avenues NW, to the homes. 202-537-3190.

TREE LIGHTING ceremony, with caroling and a reception, on Dec. 6 from 5:30 to 7:30 at SOC Enterprises, 750 S. 23rd St., Arlington. 703-521-4441.

TREE LIGHTING on Dec. 6 at 6 at the Manassas Museum, 9101 Prince William St., Manassas. On Saturday at 10:30, Manassas holds its 57th annual Christmas parade on Main Street. 703-361-6599.

OLD TOWN WARRENTON welcomes the holidays on Dec. 6 from 6 to 9 with a Christmas tree lighting, Santa and Mrs. Claus, street entertainer and wagon rides, all along Main Street. On Dec. 8 from noon to 3:30, visit with Santa, listen to a storyteller or take a carriage ride, all on Main Street. 540-349-8606.

GREAT FALLS Tree lighting with caroling, a petting zoo, hot cider and Santa on Dec. 6 at 6:30 at Great Falls Village Centre, Walker Road and Georgetown Pike in Great Falls. 703-759-2485.

ENCHANTED FOREST -- See 300 decorated trees, gingerbread houses and wreaths; visit Santa's workshop, and enjoy music at the Junior League of Northern Virginia's Enchanted Forest Dec. 6 from 7:30 to 10, Dec. 7 from 9 to 5:30 and Dec. 8 from 10 to 3 at Dulles Expo Center on Willard Road off Route 28 in Chantilly. General admission is $8, $5 seniors and children 11 and younger (toddlers under 2 free). Admission to the Dec. 6 preview is $15. Admission to Santa's workshop is $20 and includes one child and one adult who will make a craft together. 703-848-2884.

Dec. 7

WINTERFEST -- Carnival games, music, poetry, moon bounce and other attractions, Dec. 7 from 10 to 6 at Sandy Spring Friends School, 16293 Norwood Rd., Sandy Spring. 301-774-7455, Ext. 180.

SCOTTISH CHRISTMAS WALK -- The annual Scottish Christmas Walk parade with more than 100 clans, bagpipers and antique cars takes place Dec. 7 at 10:30 in Old Town. 703-549-0111.

"A DICKENS OF A TOUR: Charles Dickens in Washington" -- A walking tour led by characters from "A Christmas Carol" with anecdotes about Dickens's visit to Washington in the 19th century. Tour starts Dec. 7 at 11 at Cosi, 10th and E streets NW. $12; children 11 and younger $6. A portion of proceeds benefits SOME (So Others Might Eat) and Takoma Park Library. Repeated Dec. 14, Dec. 21 and Dec. 28. 301-588-9255.

HOLIDAY HOMES TOUR -- The 32nd annual Holiday Homes Tour in Old Town Alexandria is Dec. 7 from 11 to 4. Admission $15 in advance; $20 at the door. 703-549-0111.

BETHESDA WINTER Wonderland with music and cultural performances on Dec. 7 from 2 to 4 on the Metro level of the Newlands Building Plaza, Wisconsin Avenue and Old Georgetown Road in Bethesda. 301-215-6660.

HOLIDAY IN THE PARK -- Roast marshmallows, sing carols, visit the nature center on Dec. 7 from 3 to 6:30 at Claude Moore Park, 21544 Cascade Parkway, Sterling. 703-444-1275.

TREE LIGHTING with carolers, dancers, bell ringers and puppet and magic shows on Dec. 7 from 4 to 7 at Gaithersburg City Hall, 31 S. Summit Ave. 301-258-6350.

PARADE OF BOATS -- Boats decorated for the holidays will parade along the Alexandria Waterfront Dec. 7 from 5 to 6 and the Washington Channel from 7 to 8. 703-838-5005.

HOLLY TROLLEYFEST -- Join Santa for a ride on old trolleys and street cars during the National Capital Trolley Museum's annual festival on Saturdays and Sundays from 5 to 9 Dec. 7 through Dec. 22, plus Dec. 28-29 (without Santa). $3, $2 children and seniors. 1313 Bonifant Rd., Silver Spring. 301-384-6088.

HOLIDAYS IN LEESBURG -- Carriage rides, tree lighting, Santa and music, in the historic district Dec. 7 from 5 to 9. 703-777-1368.

ART LEAGUE BENEFIT PARTY -- Door prizes, a raffle, dancing to the Mount Vernon Swing Band and refreshments Dec. 7 from 6 to 8 at the Art League's Duke Street Annex, 1 Duke St., Alexandria. $30. 703-683-1780.

MEMORIAL ILLUMINATION -- 23,000 candles will be placed on the Antietam National Battlefield, each light representing a casualty from the bloodiest day of battle in American history, on Dec. 7 at 6 on the battlefield in Route 65 in Sharpsburg, Md. Program at 4, followed by a procession starts at 6 and usually lasts until 2:00 am the next morning. 301-432-5124.

Dec. 8

WASSAIL -- Enjoy singing, dancing, hot cider, sugar cakes, 18th-century games and a bonfire Dec. 8 from 1 to 4 at the Claude Moore Colonial Farm at Turkey Run, 6310 Georgetown Pike., McLean. $3, $1.50 seniors and children. 703-442-7557.

PARADE OF BOATS -- Event starts on Dec. 8 with a Winterfest at 4 on the docks of Washington Harbour, 3100 K St. NW. Activities include Santa, carols, cookies, hot chocolate and cider. At 5, boats decorated for the holidays will sail past the Harbour. 202-333-1600.

TREE LIGHTING on Dec. 8 at 7, with songs, refreshments and Santa, at City Hall, 2614 Kenhill Dr., Bowie. 301-809-3078.

LUCIAFEST -- Scandinavian candlelight holiday dance and Luciafest on Dec. 8 from 7:30 to 10:30 at the Cherry Hill Park Conference Center, 9800 Cherry Hill Rd., College Park. $10. 301-585-1130 or 301-493-6281.

Dec. 9

IMMIGRANT CHRISTMAS -- See a display of Christmas trees decorated by local ethnic groups, Dec. 9 through Jan. 3 from 10 to 5 weekdays at the American Immigration Law Foundation, 918 F St. NW. 202-742-5600.

Dec. 13

CANDLELIGHT TOURS of historic sites in Alexandria -- Gadsby's Tavern Museum, Carlyle House, Lee-Fendall House and Old Presbyterian Meeting House -- Dec. 13-14 from 7 to 9:30 p.m. $15, $12 for seniors, $5 for ages 6-17 in advance; after Dec. 6, $20, $15 for seniors and $5 ages 6-17. 703-549-2997.

Dec. 14

CLARKE COUNTY Holiday Homes Tour on Dec. 14 from 10 to 4. $25, $10 for one home. 540-955-5140.

HOLIDAY MEMORIES -- Experience the sights, sounds and scents of the holiday season and learn the stories behind many traditions, Dec. 14 from 1 to 4 at the Maryland Historical Society, 201 W. Monument St., Baltimore. $7; reservations recommended. 410-685-3750, Ext. 321.

Dec. 15

TASTE OF NORWAY -- Sample Norwegian holiday fare Dec. 15 from noon to 2 in the Main Hall at Union Station, 50 Massachusetts Ave. NE. 202-289-1908.

Dec. 20

FESTIVAL OF LIGHTS -- A procession takes place Dec. 20 at 6:30 in downtown Frederick and heads to City Hall, 101 N. Court St., for caroling. 301-663-8687.