When teaching with images, don’t forget the obvious. Wikimedia Commons is a collection of 61,896,277 images in the public domain as well as freely-licensed educational media content (images, sound and video clips) available to everyone (including many from our Graphic Arts Collection).
Now 16 years old, the resource is not perfect but free and sometime spectacular, such as this digital reproduction of Hieronymus Bosch’s Garden of Earthly Delights from the Prado in Madrid. The painting is next to impossible to see in person, (when travel is available) given the crowds. Here you can zoom in on any corner of the panels, producing extraordinary views. Click on each thumbnail to enlarge it.
The three panels might represent Adam and Eve on the left, a bacchanal of pleasures in the middle, and hell on the right. Commissioned by Engelbert II of Nassau, it was meant to be seen by a very few and only recently moved to a public museum. Note the prevalence of strawberries. The oak panels are not signed but attributed to Bosch.
Each wikimedia page also provides the object’s current location, Bosch is in room 56, the object history and bibliography. In this case, there are multiple files to download from various sources. Here are a few close-ups.
This man is being talked into signing a document, perhaps a papal indulgence, by the pig with a nun’s habit. One year after Bosch’s death, Martin Luther would protest against the sale of papal indulgences.
A brief introduction: https://www.youtube.com/watch?v=zD_nwg9CMzw