If i remember my Dante, his cosmology claimed that the Garden of Eden was on the top of the Tower of Purgatory, diametrically opposite Jerusalem.

Of course, his cosmology also claimed that the stars and planets revolved around the Earth, and that the entire southern hemisphere was covered by water except for the island of Purgatory... but at least he accepted that the Earth was round, right?

(note: please forgive the representation of Earth as a hexagon)

          
     _______+______
    /  \    H    / \ 
   /    \   E   /   \
  /      \  L  /     \     <-- Hemisphere of Land
 /        \ L /       \
/          \ /         \
\           *          / 
 \          |         /
  \         |        /     <-- Hemisphere of Water
   \        |       /
    \_______|______/
         \Purga/
          \tor/
           \y/
            *  
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