Maps!

I suppose there are people who do not love spending an hour or two (or more...) studying maps.  This is not for them.  For the rest of us, the New York Public Library put a collection of 20,000 maps online, free to download under a Creative Commons public domain license.  Have fun:
http://www.nypl.org/blog/2014/03/28/open-access-maps


This is just a low-resolution preview resized for LJ.