Chamber Visitor Center Please stop by for brochures, maps, information, Community Calendars, travel information for great things to do in the Tonawandas and beyond. The Chamber of Commerce of the Tonawandas 254 Sweeney Street North Tonawanda, NY 14120 Open Year Round Hours: Monday-Friday: 9am-5pm Harbor Master Office Gateway Harbor Park 99 Sweeney Street Open seasonally, May- October Daily 8:00am-8:00pm (during peak season)