Prince George's County Fair

The Prince George's County Fair is open Friday from 5 to midnight, Saturday from 11 a.m. to midnight and Sunday from 11 to 8 at the Prince George's Equestrian Center, 14900 Pennsylvania Ave., Upper Marlboro. Admission, which includes concerts on two stages and other entertainment, is $5, ages 9 and younger free. Parking is free. Call 301/952-0270.

Seafood on the Bay

A diet-busting array of seafood dishes, arts and crafts, music and children's and beach activities are showcased at the 33rd annual Maryland Seafood Festival, Friday through Sunday from 11 to 8 at Sandy Point State Park in Annapolis. Admission is $6, $2 for children 7 through 12 (younger free, $3 for seniors on Friday only). Take U.S. 50 east to Exit 32 and follow the signs. Call 410/268-7682.

Craft Showcases

See crafts artists dressed in 18th-century clothing demonstrating their skills and then shop for baskets, woodcrafts, porcelain and pottery, quilts, toys, wearable art, herbs and jewelry at the sixth annual Shaker Forest Festival Saturday and Sunday and Sept. 18 from 10 to 6, and Sept. 19 from 10 to 5:30, at Seneca Creek State Park, 11950 Clopper Rd. in Gaithersburg. Other activities include performances by Rob Caruthers and his troupe of cloggers, strolling musicians, the barbershop quartet "The President's Men" and magician Devin Knight. Admission is $6, ages 10 and younger free. Call 301/924-2127 or 888/612-0900.

More than 70 juried artisans dressed in Colonial attire will demonstrate their talents and sell their crafts at the 18th-Century Fair, Saturday and Sunday from 9 to 5 at Mount Vernon. There will also be entertainers and living history portrayals. Admission, which includes tours of the estate, is $8, $7.50 for seniors and $4 children 6 through 12 (younger free). Mount Vernon is on the south end of the George Washington Memorial Parkway, 16 miles south of Washington. Call 703/780-2000.

See more than 4,000 quilts on sale from 54 quilt vendors, watch demonstrations of quilting and take tours of a historic house at the Outdoor Quilt Show, Sunday from 10 to 5 at Sully Historic Site, on Route 28, a quarter-mile north of U.S. 50 in Chantilly. Admission is $6, $5 for seniors and $3 for children 12 and younger. Call 703/437-1794.

House and Embassy Tour

The residences of the ambassadors from Brazil, Portugal, Mali and Bolivia; the chanceries of Croatia and Finland; and five private residences are on the Kalorama House and Embassy Tour, Sunday from noon to 5. The self-guided walking tour starts at the Woodrow Wilson House, 2340 S St. NW. Tickets are $18 in advance, $20 on Sunday. Call 202/387-4062, Ext. 18.

Where Work = Fun

Take a tour of the "Tools as Art V" exhibition showcasing ordinary tools that have been turned into art and then take part in a workshop to create your own art using nuts, bolts and other items during the Fantasy at Work Family Fun program, Sunday from noon to 4 at the National Building Museum, 401 F St. NW. (Metro: Judiciary Square). Admission is free. Call 202/272-2448.

Kennedy Center Open House

The 15th annual Kennedy Center Open House is Sunday from noon to 6 and features entertainment on 12 indoor and outdoor stages, including a gospel concert by Vickie Winans; songs and stories of the Gullah people of South Carolina by Marlena Smalls & the Hallelujah Singers; stilt dancers, drummers and musicians from Neighbourhood Watch Stilts International; the National Symphony Orchestra's premiere of a new work by composer Stephen Paulus honoring George Washington; Washington Opera ensembles; hands-on activities and exhibits from the Capital Children's Museum; a 4,000-square-foot "FabricAction Playscape" for children; interactive artistic fun; storytellers and more. It's all free. Parking at the center will be limited, but free shuttles will run the three blocks between the center and the Foggy Bottom/GWU Metro station. Call 202/467-4600 (TDD: 202/416-8524).

For a detailed schedule, turn to page 34.

Black Family Reunion

The 14th annual Black Family Reunion Celebration, a tribute to the African American family, presents live performances, ethnic foods, an international marketplace, thematic pavilions, health screenings and other activities and entertainment, Saturday and Sunday from noon to 6 on the Washington Monument grounds (Metro: Smithsonian). The festival includes an R&B concert Saturday at 6 by Tyrese, Coko, Before Dark and Chuck Brown & the Soul Searchers, and a gospel concert Sunday at 6 by Richard Smallwood & Vision. Call 202/737-0120.