Where is the altarpiece located?

The location of the altarpiece can vary, as many altarpieces are found in churches, cathedrals, or chapels around the world. Notable examples include the Isenheim Altarpiece in the Unterlinden Museum in Colmar, France, and the Ghent Altarpiece in St. Bavo's Cathedral in Ghent, Belgium. If you are referring to a specific altarpiece, please provide its name for more precise information.