For the more than 10 years and running strong, Baltimore partygoers have sought to supersize their Halloween thrills at Baltimore, Federal Hill's biggest Halloween bar crawl event, Hill-O-Ween This monster Halloween party offers no cover admission at Fed HIll's hottest bars and restaurants. Fill your cup with wicked brews and great drink specials until midnight. Fiending for fun? Be inhibition free and don your most wickedly sexy or scary costumes and get ready to bar hop with friends for a hauntingly spooktacular Halloween. With years of great thrills, Hill-O-Ween is the bloodiest good thing to do on Halloween.