Understand
Convention and Visitors Center
245 Commercial St, +1 207 772-5800 or +1 207 772-4994, (http://www.visitportland.com). Guided walking tours available July-September at 10:30AM.Greater Portland Landmarks
165 State St, +1 207 774-5561, fax +1 207 774-2509, (http://www.portlandlandma...). A resource for tours.Portland's Downtown District, 549 Congress St, +1 207 772-6828. wwww.portlandmaine.com