"65 is the new 45″ and that means trekking, zip-lining and bike tours are no longer off limits. A study conducted by Preferred Hotel Group found that baby boomers, that is, people born between 1946 and 1964, want to take their travel experiences to a new level, where experiential, active and thematic travel is at the top of their lists. Not willing to be relegated to a bus tour, the 77-million-strong U.S. baby boomer generation is proving they are young-at-heart with a passion for active experiences in global destinations.

To honor this iconic generation, the first of whom turned 65 on January 1, 2011, nearly 100 Preferred Hotel Group members worldwide are offering a "Time to Celebrate" offer on stays now through May 31, which include:

A two-night stay with the first night at published room rate (two night minimum/maximum stay)

A second night stay for $65 (or the local currency equivalent)

Whether it is exploring the temples of Angkor Wat in Siem Reap, Cambodia, or taking a camel safari through the scenic hills of Udaipur, India, select Preferred Hotel Group members are offering baby boomers very special rates for world-class accommodations, fine dining, spa and activities.

Here's a sampling of "Time to Celebrate" offers available throughout the world:

Hotel Brick, Mexico City, Mexico: Located in the vibrant Roma neighborhood, this 17-room property (nine of which are suites), is within easy access to all city center attractions, like the Anthropology and Natural History Museums, while providing an intimate atmosphere. Rates start at $246.

Aranwa Sacred Valley Hotel & Wellness, Urubamba, Peru: Set on the river's edge of an ancient, the 18th-century colonial hacienda, Aranwa Sacred Valley showcases modern, minimalist decor mixed with colonial touches throughout its 115 guestrooms and suites. Learn about Peruvian cuisine through in-house cooking demonstrations using local organic ingredients or take part in the preparation of unique cocktails using local beverage ingredients such as pisco. Rates start at $162.

The Seagate Hotel & Spa, Delray Beach, Florida: Rejuvenate the spirit at this luxury hotel by the sea in the heart of Delray Beach's shopping and arts district. Start the day off with a holistic treatment at the 8,000-square-foot spa or take walk a short block to the beach, where guests can enjoy water sports, a beach side swimming pool, and ocean view dining at the Seagate Beach Club. Rates start at $207.

The Kitano New York, New York City: Japan meets Park Avenue at the sophisticated Kitano New York. For guests seeking tranquility in the "city that never sleeps," The Kitano offers green tea upon arrival, Tatami suites, and use of the hotel's Japanese Ceremony room. Before starting your night on the town, enjoy pre-dinner cocktails at the Bar Lounge while listening to live jazz. Rates start at $335.

Angkor Palace Resort & Spa, Siem Reap, Cambodia: Located only 20 minutes from the famous Angkor Wat, this premier luxury five-star resort reflects the finest in Cambodian architecture befitting royalties and dignitaries. Each of the 259 spacious rooms pays tribute to the distinctive Cambodian tradition of Khmer artistry and architecture. Rates start at $112.

Included in the list of participating properties is Barnsley Gardens Resort of Adairsville and Chateau Elan of Braselton.

For a complete list of the dozens of hotels offering "Time to Celebrate" worldwide, visit www.phgoffers.com/babyboomer.

Clara Bosonetto is a retired travel consultant.