\b0 Everything in Colmar evokes an Alsace that is a feast for the eyes, with houses that have half-timb
ering of different colors under red roofs and are surrounded by flowers. The \i Lauch\i0 flows through between embankments of stone and the \i Kofhus\i0 , the old customs house, proudly flaunts its Gothic architecture, as does the collegiate church of S
aint-Martin. The town also boasts one of the great masterpieces of Western painting, a retable by Mathias Grⁿnewald (early sixteenth century) depicting the \i Crucifixion.\i0 It is housed in a former Dominican monastery that is now the Unterlinden Museu