The 'Adoration of the Mystic Lamb,' also known as the Ghent Altarpiece, is a masterpiece of Northern Renaissance art. Completed in 1432 by Hubert and Jan van Eyck, it is a complex polyptych (multi-panel painting) that contains over 100 figures. The central panel depicts a lamb on an altar, symbolizing Christ, surrounded by angels and saints. The detail is so microscopic that botanists have identified over 40 species of plants in the landscape, each rendered with scientific accuracy. The painting has a turbulent history, having been stolen 13 times, including a massive looting by the Nazis during WWII. It was eventually recovered from an Austrian salt mine by the 'Monuments Men.' To this day, one of its panels, 'The Just Judges,' remains missing after a 1934 theft, replaced by a modern copy.