Graffiti is illegal in Tacoma, Washington. However, the city allows public expression at 723 Broadway Street, better known as the Graffiti Garage. The concept of providing a canvas for talented artists was created by the Tacoma Arts Commission and the city. Six days a week, the garage is open for short-term parking. On Sundays, when the cars are gone, the artists bring knapsacks and carry cases of specialized paint to create distinctive murals. Their self-policed code is that an artist can only paint over an existing work if theirs is more elaborate and artistic.