In most South American cultures, there is a deep respect for the elderly. Usually, if you ask for a senior discount, vendors will be happy to help you out. So don't be shy about asking for discounts, but always carry some kind of identification, such as a driver's license, that shows your date of birth. Also, mention the fact that you're a senior when you first make your travel reservations. All major airlines and many hotels offer discounts for seniors. In most cities, people over 60 qualify for reduced admission to theaters, museums, and other attractions, as well as discounted fares on public transportation.

Members of AARP (formerly the American Association of Retired Persons), 601 E St. NW, Washington, DC 20049 (tel. 888/687-2277; www.aarp.org), get discounts on hotels, airfares, and car rentals. AARP offers members a wide range of benefits, including AARP: The Magazine and a monthly newsletter. Anyone over 50 can join.

Many reliable agencies and organizations target the 50-plus market. Elderhostel (tel. 877/426-8056; www.elderhostel.org) arranges study programs for those 55 and over (and a spouse or companion of any age) in more than 80 countries around the world. Most courses last 2 to 4 weeks abroad, and many include airfare, accommodations in university dormitories or modest inns, meals, and tuition. ElderTreks (tel. 800/741-7956; www.eldertreks.com) also offers small-group tours to off-the-beaten-path or adventure-travel locations, restricted to travelers 50 and older. INTRAV (tel. 800/456-8100; www.intrav.com) is a high-end tour operator that caters to the mature, discerning traveler (not specifically seniors) with trips around the world that include guided safaris, polar expeditions, private-jet adventures, and small-boat cruises down jungle rivers.

Although many of the specialty books on the market are U.S.-focused, some do provide good general advice and contacts for the savvy senior traveler. Recommended publications offering travel resources and discounts for seniors include the quarterly magazine Travel 50 & Beyond (www.travel50andbeyond.com); Travel Unlimited: Uncommon Adventures for the Mature Traveler (Avalon); and 101 Tips for Mature Travelers, available from Grand Circle Travel (tel. 800/221-2610 or 617/350-7500; www.gct.com).