Graffiti park is private property close to castle hill near downtown Austin. The owner of the property had allowed the large concrete supporting structures to be a canvas for local artists and graffiti artists. Of course the property was recently sold and the new owner has actual plans for the property and all of the dips in the austin area screamed about heritage blah blah blah. I grew up in Austin and never knew about this until recently. Just a hippie hangout, that is no more. Search for graffiti park in Austin for images. It wasn’t terrible just a local spot.