"The Country Studies Series presents a description and analysis of the historical setting and the social, economic, political, and national security systems and institutions of countries throughout the world."
Street maps, directions, satellite images, etc. for most of the world. Also provides live traffic information and maps services (hotels, airports, restaurants, shopping, etc.) for some areas; coverage is most complete in US and Canada.
Links to many tools such as land surveys, geochemical surveys, and the BASIN database ("...geological, geophysical and engineering information related to many years of petroleum exploration, primarily offshore northern and eastern Canada.")