Explorers Discovery and exploration 176 Discoveries in geography 138 Explorateurs 121 History 107 BIOGRAPHY & AUTOBIOGRAPHY 73 TRAVEL 71 Histoire 70 HISTORY 64 Historical 59 Travel 55 Spanish 52 General 51 Découverte et exploration 48 Description and travel 37 Descriptions et voyages 27 State & Local 26 Earth Sciences 25 Geography 25 Budget 24 Hikes & Walks 24 Museums, Tours, Points of Interest 24 Parks & Campgrounds 24 SCIENCE 23 Indians of North America 20 British 19 Voyages and travels 17 Adventurers & Explorers 15 Australia & Oceania 15 Voyages 15