MERCER MUSEUM fA ONTHILL CASTLE Smithsonian Affiliate Once on a Ji ns che bordo Enchanting fairy tales come to life at the Mercer Museum's winter exhibit! Open now through January 6, 2019 Learn more at mercermuseum.org (Closed Thanksgiving Day) Once Upon A Time... Exploring the World of Fairy Tales is a collaborative effort of the St. Louis Public Library and The Magic House, St. Louis Children's Museum and is made possible by a grant from the Institute of Museum and Library Services.