Albrecht Dürer's paintings (~1500)

Albrecht Dürer (May 21, 1471 - April 6, 1528) was a German painter, printmaker and theorist from Nuremberg. ... His watercolours mark him as one of the first European landscape artists, while his ambitious woodcuts revolutionized the potential of that medium. Dürer's introduction of classical motifs into Northern art, through his knowledge of Italian artists and German humanists, have secured his reputation as one of the most important figures of the Northern Renaissance. (from wikipedia )

Trento and river Adige

Trento - Buonconsiglio Castle

Castle in the nearby city of Arco

Anoter view from Trento

Cycle of the months - January ~ 1403

Trento - Buonconsiglio Castle

(with interpretation) The whole scene is set in a snow covered landscape, the first large representation of this kind in the history of western painting. In the foreground, two aristocratic groups (theorists and experimentalists) are having a snowball flight. The scene is dominated by a castle close to Trento (ivory mathematics towers) , painted in a realistic way that reproduces the different construction styles. A bridge (LION3 :) connects the castle to the outside world. On the right there are two hunters (engineers and application hunters) coming through the snow, each with two dogs on a lead (graduate students) . One of the hunter's dogs is heading toward a bush in which a badger is hiding (NP-hard optimization problem). The whiteness of the snow-covered countryside is broken by the low bushes and the fir trees (the "real world") under which there are some foxes (non-approximable problems).