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 50 or over can join.

The U.S. National Park Service offers an America the Beautiful -- National Park and Federal Recreational Lands Pass -- Senior Pass (formerly the Golden Age Passport), which gives seniors 62 years or older lifetime entrance to all properties administered by the National Park Service -- national parks, monuments, historic sites, recreation areas, and national wildlife refuges -- for a one-time processing fee of $10. The pass must be purchased in person at any NPS facility that charges an entrance fee. Besides free entry, the America the Beautiful Senior Pass also offers a 50% discount on some federal-use fees charged for such facilities as camping, swimming, parking, boat launching, and tours. For more information, go to www.nps.gov/fees_passes.htm.

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.