Open Maps and the Discoverer in You
I really enjoyed Measuring the World (in German: Vermessung der Welt) by Daniel Kehlmann. It describes how Alexander von Humboldt cartographs southern America and how Carl Friedrich Gauss finds out loads of miracles of the world of mathematics (and later uses these to measure out western Europe). The book is really good in giving you the feelings of those days – how it was being a discoverer.