National Geographic, Feb, 1922
books.google.com
books.google.com
There's something about exploring, and in particular this golden age of pulp-novelesque/Indiana Jones-style exploration, which is really exciting to me. Also, check out the way they describe things: an iguana is described as an "antediluvian reptile" on page 140.
At this point, the areas which can engender this type of unvarnished wonder and excitement of discovery seem to be the deep ocean and outer space. Most of the rest of the world has been explored thoroughly enough to seem banal or uninteresting to a lot of people, which is really sad. I hope the world never starts seeming ordinary to me.
http://www.amazon.com/dp/1426296355
(Disclaimer: I helped develop the app)