Walking through a museum there is an expectation of seeing art, ancient artifacts and other historical memorabilia. The California Museum is switching up the idea of what a typical museum holds by introducing California to an important part of its history with a story that is not often told. Behold the colors, wheels, art, big names, shapes and sizes. Riding Concrete: Skateboarding In California, is the new exhibit showing from July 2 through March 24, giving an up-close look at the California-created sport. Located on 1020 O St. downtown, the exhibit is curated by the legendary skateboarder and surfer Nathan Pratt, who also co-stared in the “Dogtown and Z-Boys” documentary back in 2002