The Annual Muscle Beach Cruz takes place in downtown Seaside on Saturday, June 20th. Muscle Beach Cruz is open to American built cars from 1960 to 1978. Hundreds of beautiful, spotless muscle cars line up on the downtown streets for public viewing. It’s great fun for the entire family. The event also features vendors, artists, car related items for sale, live entertainment and a street dance set to nostalgic music of the era.