I love maps. Old maps, new maps, maps that never were.
Here are few that catch my fancies, and fantasies.
I'd love to plan a game sometime for the far future of Earth. Maybe something along the lines of Dying Earth or Clark Ashton Smith's Zothique cycle.
(image from here, http://www.scotese.com/earth.htm)
Given my love for the roots of D&D, Victorian adventure and weird SciFi I have also had a desire to play on a Mars that Never Was, a Mars with oceans.
Likely using some of the Warriors of Mars ideas from Jason Vey's site.
The Places I Could Go, indeed.