Inca Trail Links
General
Wikipedia’s summary of information about Machu Picchu.
Wikipedia’s summary of information about the Inca Trail.
A one-page overview of Machu Picchu from National Geographic, with a slideshow and basic information about the site.
Machu Picchu’s entry on the UNESCO World Heritage list, with an extensive photo and video gallery.
A good collection of information about Machu Picchu, organized in a question-and-answer format.
A collectively-edited page of tourist information about Machu Picchu from Wikitravel.
Trails and Treks
Hiking the Inca Trail without a guide is no longer permitted. This article explains how to keep the size of your group to a minimum.
An overview of five hikes in the Andes, including variants of the Classic Inca Trail, the Lares, the Salkantay, and the Inca Jungle Trail.
A description of walking the Lares Trail, an alternative hiking trail that explores the nearby Lares Valley.
Other sites
An account of visiting some lesser-known Inca sites, including Choquequirao, Espiritu Pampa, Llactapata and Mount Machu Picchu.
Gary Ziegler's account of revisiting Choquequirao.
Related topics
An article explaining how simple agricultural engineering techniques allowed the Inka to grow crops at scale in the challenging environment of the Andes.