Well, after a nice google search, Carlsbad Skatepark (RIP) seems to takes the cake, built March 13th of 1976. But following close behind was Santa Cruz's Derby Skatepark, designed by Ken Wormhoudt's design firm (still Wormhoudt, Inc.) sometime in 1976. This is literally just a snake run, but super fun. You basically park your car in a residential area and walk into the park. Kona Skatepark in Jacksonville, FL, gets lots of recognition for being one of the oldest still-in-existent skateparks, established in 1977 by the Ramos family.
Here are some links to see more pics for this article.
http://www.carlsbadskatepark.org
http://www.skateparks.com/firm.php
To the right and below is a picture of Lorraine Carrig at Derby Skatepark, 2007, during one of our many skate adventures.
