The Day of Death is one of the most amazing experience you can get from a city like LA. Every year, during the week-end of Halloween, the Hollywood Cemetery becames the stage of the most candid and beautiful celebration of life and death I ever seen.
The Rose Bowl happens in Pasadena. The Flea Market is only once a month, its usually the second Sunday of the month. Its a great place to find vintage clothes, antiques and rare treasures. I once found an amazing David Hamilton book that I bought for $15 when it was worth $500.
If you find yourself in Malibu for any reason, stop by the Pepperdine university campus and check out this grass field. If there aren't any lacrosse practices happening, then you can sit and fell like you're on the edge of the world.