The world has changed dra­mat­i­cal­ly over the past 500 years, albeit not quite as dra­mat­i­cal­ly as how we see the world. That’s just what’s on dis­play at the David Rum­sey Map Col­lec­tion, whose more than 131,000 his­tor­i­cal maps and relat­ed images are avail­able to browse (or down­load) free online. Since we last fea­tured it here on Open Cul­ture, the col­lec­tion has added at least 40,000 items to its dig­i­tal hold­ings, mak­ing it an even more valu­able resource for not just under­stand­ing how human­i­ty has viewed the world through­out the ages, but how we’ve imag­ined it — and, for that mat­ter, how we’ve imag­ined oth­er worlds from Mars to Nar­nia to Kryp­ton. “Imag­i­nary maps” is just one of the cat­e­gories through which you can explore the David Rum­sey Map Col­lec­tion. There are also tags for news­pa­per maps, time­lines, city maps, celes­tial maps, data visu­al­iza­tions, chil­dren’s maps, and more vari­eties besides. If you’d pre­fer a more tra­di­tion­al form of orga­ni­za­tion, you can search for maps of spe­cif­ic geo­graph­i­cal regions: North Amer­i­ca, South Amer­i­ca, Europe, Asia, Africa, Aus­tralia, Antarc­ti­ca, the Pacif­ic, the Arc­tic, …