02/15/2013 01:47 pm ET

Six High-Altitude Vacations To Take While You Can

To celebrate her 50th birthday and the publication of her book, 1,000 Places To See Before You Die (Workman Publishing) 10 years ago, Patricia Schultz visited Machu Picchu. The 15th century “Lost City of the Incas” in the heart of the Urubamba valley in southern Peru, was recently voted one of the new seven wonders of the world. It’s a physically taxing journey to see it, though, partly because of the location at an altitude of nearly 8,000 feet, and also because to visit properly you need to scramble around an archaeological site. As her milestone birthday approached, Schultz decided it was better “to see it sooner, rather than later.”

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