Built in 1232 as a Dominican convent, the Unterlinden Museum (Under the Linden Tree) is a treasure house of important international masterpieces and Alsatian art. In December 2015, a new wing opened connecting the former convent to a contemporary building devoted to modern art. A tunnel joins the new with the old and gives the museum more open space.
The most famous piece in the museum is a 16th-century multi-panel painting by Matthias Grunewald called Isenheim Altarpiece ( Le Retable d’Issenheim), which some people believe has, or once had, a miraculous power to heal.
The museum also has an extensive collection of paintings by Martin Schongauer, including exquisite 15th-century altarpiece panels. Also, look for The Last Supper and The Entry of Christ into
Jerusalem, painted by Kaspar Isenmann in 1465 for an altar in Colmar’s Church of Saint Martin (Eglise Saint-Martin).
Sections of the museum feature modern artists, such as Picasso and Renoir, as well as folk art and decorative art that focuses on everyday Alsatian life between the 5th and 18th centuries.