Seniors, referred to in Chile as tercera edad, or "third age," will find plenty of discounts at museums and attractions, but not much else. Members of AARP, 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 outstanding study programs in Chile for those ages 55 and over. ElderTreks (tel. 800/741-7956; www.eldertreks.com) 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.

Note: This information was accurate when it was published, but can change without notice. Please be sure to confirm all rates and details directly with the companies in question before planning your trip.