RCW 35.86.010
RCW 35.86.010: Space and facilities authorized.
Cities of the first and second classes are authorized to provide off-street parking space and facilities located on land dedicated for park or civic center purposes, or on other municipally-owned land where the primary purpose of such off-street parking facility is to provide parking for persons who use such park or civic center facilities. In addition a city may own other off-street parking facilities and operate them in accordance with RCW 35.86A.120 .