That's the thought process with a recently opened restaurant and bar in Portland, Maine. Zero Bar and Grille is 'Hidden' Behind a Hotel in Portland, MaineIf you go searching for Zero Bar and Grille, you'll find yourself in a part of Portland that doesn't seem like it would be home to a Halloween-themed restaurant. The exterior of Zero Bar and Grille doesn't just scream spooky season, it lets you know that this is a lifestyle. Zero Bar and Grille Embraces the Macabre Inside The Restaurant as WellIf you absolutely love Halloween and the decor of the season, then Zero Bar and Grille will speak to your soul. Zero Bar and Grille also offers doggie bags, in which a portion of the proceeds are donated to a rescue shelter for animals.