Travel agencies can provide information on what to see and do in Puerto Vallarta and can arrange tours, fishing trips, and other activities. Most hotels have a tour desk on-site. Of the many travel agencies in town, I highly recommend Tukari Servicios Turísticos, Av. España 316 (tel. 322/224-7177; fax 322/224-2350), which specializes in ecological and cultural tours. Another source is Xplora Adventours (tel. 322/223-0661), in the Huichol Collection shop on the malecón. It has listings of all locally available tours, with photos, explanations, and costs; however, be aware that a timeshare resort owns the company, so part of the information you receive will be an invitation to a presentation, which you may decline. American Express Travel Services, Morelos 660 (tel. 322/223-2955), also has a varied selection of high-quality, popular tours. One of the tour companies with the largest -- and best quality -- selection of boat cruises and land tours is Vallarta Adventures (tel. 866/256-2739 toll-free from the U.S., or 322/297-1212, ext. 3; www.vallarta-adventures.com). I can highly recommend any of their offerings. Book with them directly and get a 10% discount when you mention Frommer's.