No joke, this is bomb!
Experience Bosch’s piece through this “‘interactive documentary’ [that] not only lets you explore the painting in incredible detail down to the most minute brush strokes, it also includes sound design as you move through various sections of the painting and a series of audio essays describing over 40 areas of the painting!” (http://www.thisiscolossal.com/2016/02/interactive-bosch/)
Garden of Earthly Delights is a unique painting for its time and in the 15th century Northern Renaissance. In fact, besides Bosch’s landscape, detail-oriented, symbolic motifs relevant to the style of the time, the painting resembles the surrealism and abstraction of art in the 20th century.
Famous Surrealist Paintings from the 20th cent.
You can learn even more about this masterwork of art through this Khan Academy article