Map for Gahanna Convention & Visitors Bureau Map for Gahanna Convention & Visitors Bureau Search | Advanced Search | New Members | Coupons and Discounts | All Categories Lodging, Travel & Tourism >> Convention & Visitors Bureaus Gahanna Convention & Visitors Bureau 110 Mill StreetGahanna, OH 43230 | directions (614) 418-9114 Visit Site Need to update your categories or expand your listing? Or want to learn how your business can become a part of the Chamber? Contact us at membership@columbus.org for assistance.