Maryland Katsucon conventiongoers invade Maryland’s National Harbor COLLEGE PARK, Maryland — Anime, comic book, and superhero enthusiasts donned their best costumes at this year’s Katsucon convention in National Harbor, Maryland. Share this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Reddit (Opens in new window) February 22, 2017