Images

The Seven Wonders of the Ancient World represent the pinnacle of human creativity, ambition, and engineering skill in classical antiquity. Compiled by Greek scholars during the Hellenistic period (c. 3rd century BCE), the list celebrated...

A 1942 photograph of Field Marshal Erwin Rommel (1891-1944) and the Nazi leader Adolf Hitler (1891-1944). (German Federal Archives)

A 1917 photograph of the German commander Erwin Rommel (1891-1944) during the First World War (1914-18) when he led a specialist mountain unit.

A photograph of the German commander Erwin Rommel (1891-1944) taken in 1940 when he led the 7th Panzer Division during the Fall of France. (Imperial War Museums)

Henry David Thoreau (1817-1862), stipple and line steel engraving on paper by an unknown artist after Samuel Worcester Rowse, c. 1863 National Portrait Gallery, Smithsonian Institution.

Henry David Thoreau (1817-1862), photograph by Benjamin Dexter Maxham, 1856. National Portrait Gallery, Smithsonian Institution.

Title page from the first edition of Walden by Henry David Thoreau, Ticknor and Fields, 1854.

Plaque commemorating Thoreau's night in jail. Concord, Massachusetts, USA.

North American red fox photographed in the Rocky Mountains, Colorado, USA by Lvaughn7 in 2015.

The First Crusade (1096–1099) marked the beginning of a series of military campaigns launched by Western European Christians in response to Pope Urban II's appeal at the Council of Clermont (1095). The goal was to recapture Jerusalem and...