You have your choice of street fairs and festivals over the 3-day weekend.
There's the Memorial Day Street Fair on Saturday and Sunday. The location is given as Wilshire Blvd. and Alvarado, which is right next to Macarthur Park downtown. Organized by Hispanic Events Marketing, this festival should attract lots of Spanish-speaking families. Expect food, live music and carnival rides. Free.
Then there's Topanga Days, an annual celebration in Topanga Canyon. Now in its 35th year, the festival includes two stages of live music and dance performances, an arts & crafts fair, and a parade on Monday. Expect lots of hippies, vegetarians and nature lovers. Tickets are $18 for adults and $10 for kids.
Finally, there's the 35th Annual Valley Greek Festival at St. Nicholas Greek Orthodox Church in Northridge. Three days of traditional Greek music and dancing, Greek food and pastries, and Greek handicrafts. There will also be cooking demos and tours of the church. Expect a lot of Greeks. Free.