Published on: March 3, 2015Printing press The German Johannes Gutenberg invented the printing press around 1440. Key to its development was the hand mold, a new molding technique that enabled the rapid creation of large quantities of metal movable type. Printing presses exponentially increased the speed with which book copies could be made, and thus […]
Published on: March 23, 20154.) Puente Nuevo, Ronda, Spain This huge bridge connects the two parts of the city of Ronda, and took 42 years to build, beginning in 1751. The chamber over the central arch was used for a variety of nefarious purposes, including as a prison and a torture chamber. Loading…
