It is famous for the "wintertuin" ("winter garden") of the Ursulines Institute. It is almost never open to public visits, except on occasional open houses and group visits. The wintertuin is just one room in the Ursuline complex, initiated in 1841 and gradually expanding to fulfill its function as a boarding school and teacher training school. The identity of the architect of the wintertuin in 1900 has been lost in the passage of time, but its magnificent stained glass dome together with the interior decoration remains as a testament to the dazzling beauty of Art Nouveau architecture. All of the fixtures and furnishings of the wintertuin are original and have remained in superb condition. The other rooms of the Institute were created in different styles as was normal in interiors of the well-educated.