Plus Ultra

“Plus ultra,” Francis Bacon’s motto for the Age of Discovery is the fitting emblem for this 1567 map based on Spanish explorations of the New World. The “Ne plus ultra” (“nothing more beyond the Pillars of Hercules”) of the classical period was replaced by the “Plus ultra” of the Renaissance.

Ferdinand Magellan and the renaming of the South Sea

On November 1, 1520, All-Saints’ Day — in the South American spring — Ferdinand Magellan entered the strait that he named for the day: Estrecho de Todos los Santos (Strait of All Saints), but which now bears his name. The channel was relatively narrow and currents and wind were strong and treacherous, but Magellan and most of …

The Niger River

World maps display the surface of a sphere on a flat surface, necessarily introducing distortion. In the Mercator projection, named for 16th century Flemish cartographer Gerardus Mercator, the lines of longitude are represented as parallel vertical lines, even though on the surface of the earth, the lines of longitude approach each other, until they meet …