Sun. Best Bets: 9/13

3pm: Music

Bring Grandma and Grandpa along for a free Symphony in the Glen Grandparents Day Concert. The concert features an all-Mozart program with a musical tribute to grandparents with words written to a Mozart aria by maestro Arthur B. Rubinstein. A “Junior Maestro” conducting class, an appearance by the “Micester Singers” and more free children’s activities will precede the concert.

* Symphony in the Glen Grandparents Day Concert, 3-5 p.m. Children’s activities begin at 1:30 p.m. Griffith Park, near merry-go-round, 4800 Crystal Springs Drive, Los Angeles. Free admission and parking with canned food donation. (213) 955-6976.

7:30pm: Theater

“The Last Empress,” Arts Communications Seoul Company’s internationally touring musical, comes to the Shubert Theatre. It’s based on the life of 19th century Empress Min, who led Korea through the turmoil of modernization, only to be assassinated in 1895.

* “The Last Empress,” Shubert Theatre, 2020 Avenue of the Stars, Century City. Sunday, 7:30 p.m. Regular schedule: Tuesday-Friday, 8 p.m.; Saturday, 2 and 8 p.m.; Sunday, 3 and 7:30 p.m. Ends Oct. 4. $25-$60. (800) 447-7400.

10am: Family

As part of Porsche’s 50th anniversary celebration, 13 historic automobiles ranging from the 1954 Carrera Speedster to the 1962 Le Mans winner of 1994 are on display at Petersen Automotive Museum.

* Porsche’s 50th anniversary celebration, Petersen Automotive Museum, 6060 Wilshire Blvd. Tuesday-Sunday, 10 a.m.-6 p.m. Through Nov. 8. Adults, $7; seniors, students, $5; children 5-12, $3; museum members and children under 5, free. Parking, $4. (323) 930-CARS.

10am: Festival

The eclectic Abbot Kinney Boulevard Festival, named after Venice’s founder, will offer 200 booths of arts and crafts, art exhibitions, clothes, food from local restaurants, children’s activities and performances by live bands, such as Freshly Baked, Mongoose, Weapon of Choice and Venice.

* Abbot Kinney Boulevard Festival, 10 a.m.-6 p.m. Abbot Kinney Boulevard from Venice Boulevard to Main Street, Venice. Free admission. Free parking at Westminster Elementary School and the Quarterdeck parking lot in Marina del Rey. Dash shuttle will transport people to the festival. (310) 396-3772.

all day: Festival

Three Latino heartthrobs--Marco Antonio Solis, Carlos Ponce and Rosco--will attract fans spanning several generations to a free music event celebrating the independence of six Latin countries. From pop to country to folkloric, there will be tunes for everyone at La Fiesta de Independecia ‘98, organized by KLVE-FM and “La Nueva” 101.9 FM at Whittier Narrows Recreational Area. Also on the bill: mariachis, ballet folklorico dancers, prizes, exhibits, children’s activities, food and drink.

* La Fiesta de Independecia ‘98, 11 a.m.-6 p.m. Whittier Narrows Recreational Area, Rosemead Boulevard at the Pomona (60) freeway, South El Monte. Free. (626) 575-5526.

noon: TV Convention

“Babylon 5” fans can meet their favorite space travelers during the Babylon 5 Convention in Burbank. Bruce Boxleitner and other cast members of the syndicated sci-fi television show will greet and sign autographs at convention.

* Babylon 5 Convention, Burbank Airport Hilton, 2500 Hollywood Way. Bruce Boxleitner, Peter Jurasik, Andreas Katsulas are scheduled to attend. Noon-6 p.m. Tickets: $17 in advance; $20 at door; children 7-12, $10; 6 and under, free. (818) 409-0960.

FREEBIE: Long Beach Museum of Art Children’s Cultural Festival, 2300 E. Ocean Blvd., noon. (562) 439-2119, Ext. 41.