The well-preserved old town center houses several German Gothic and early Renaissance buildings, as well as old churches, among which the Collegiate Church of San Martín (from the 13th century) is the largest and most notable. Among its rich cultural heritage, the ex-convent of the Dominicans, the Municipal Theater, the channels of "Little Venice" and various constructions dating from the Middle Ages also stand out. Its geographical location (located in the middle of the Alsatian vineyards), has given it the name of "Capital of Alsace wines. Cultural city, in Colmar is the Unterlinden Museum that houses the famous Issenheim Altarpiece, it is the birthplace of the Creator of the Statue of Liberty, Frédéric Auguste Bartholdi6? Once a year, in the month of August, Colmar hosts the Wine Fair; in the month of December, the entire city becomes a Christmas paradise with its five markets of Christmas, famous throughout the country for its beauty and tradition. Colmar is perhaps France's most famous destination for visiting Christmas markets throughout France. Local 15th century artist Martin Schongauer painted what is considered his masterpiece, The Virgin de las Rosas, in the Dominican church The famous Isemheim Altarpiece, by Matthias Grünewald, is the most outstanding treasure that houses the city's Unterlinden Museum, which was opened in 1853 and is in the old convent of the Dominican order of "Unterlinden" (which means "under the lime trees").