Machu Picchu Modern Marvels : Season 10 Episode 55

TV-PG History 1h 00m int(0)

Aired: December 15th, 2004 @ 10:00 PM EST on History

The engineering marvel Machu Picchu sits perched on a ridge in the Peruvian Andes. Originally built by the Incas, this magnificent structure remains a mystery. Was it an observatory? Pleasure retreat? Fortress? This program presents the most current theories.