That said, at an altitude of more than 11,000 feet, exploring Cusco requires stamina. Should you need to catch your breath, it's easy to flag down a taxi. Buses, often called colectivos or combis ...

Opinions expressed by Forbes Contributors are their own. Jared Ranahan is a reporter who covers travel and ecotourism. Long renowned for its dazzling 15th-century Incan architecture, the historic ...