The Unterlinden Museum, famous for its masterpiece, The Altarpiece of Issenheim, officially opened in 1853. Today, the Unterlinden Museum offers its many visitors dialogue and knowledge, emotion and pleasure. It offers a tour route covering nearly 7000 years of history, from prehistory to 21st century art. This journey through time allows us to discover the many facets of the museum’s architecture, unified and magnified by the redevelopment and extension of the architects Herzog & de Meuron completed in 2015. By browsing the rooms of the former 13th century convent, the former municipal baths inaugurated in 1906 and the contemporary spaces built in 2015 as well as the museum’s collections, visitors can see the successive stages of a history of more than 170 years. The walls and works are testimony to the dynamic work of the Schongauer Society, an association that has managed and administered the Unterlinden Museum since 1853.