This is a great description of the Ziggurat by a U.S. platoon leader who visited the site. For additional insight into the Ziggurat, watch this slide show with some nice, loud background music: http://www.youtube.com/watch?v=XnWpBwmi6_o
This site, The World of Dante, is a multi-media research tool intended to facilitate the study of the Divine Comedy through a wide range of offerings. These include an encoded Italian text which allows for structured searches and analyses, an English translation, interactive maps, diagrams, music, a database, timeline and gallery of illustrations. Many of these features allow users to engage the poem dynamically through the integrated components of this site.