Incorporated in 1986 , Galveston Arts Center ( GAC ) is a non @-@ profit , non @-@ collecting arts organization . The center exhibit contemporary art , often by Texas @-@ based artists , and offer educational and outreach programs . Notably , GAC organize and produce Galveston ArtWalk . Museum entry is free to the public , although cash donations are welcomed . Tiered membership options and a range of volunteer opportunities are also available .