The Nationalgalerie building on Berlin's Museum Island, now the Alte Nationalgalerie, opened in the presence of Kaiser Wilhelm I. The project had grown from Joachim Heinrich Wilhelm Wagener's bequest of 262 paintings and from Prussian ambitions to create a public home for contemporary national art. Designed from plans by Friedrich August Stuler and completed under Johann Heinrich Strack, the temple-like structure combined late Classicism, Neo-Renaissance detail, and modern iron-and-brick fireproof construction. Its initial display paired the Wagener collection with cartoons by Peter von Cornelius, while its broader mission was to give Berlin a repository for modern and primarily Prussian art. Later acquisitions under Hugo von Tschudi expanded that mission toward French Impressionism, making the gallery a key institution in Germany's museum history.
It anchored Berlin's National Gallery system and helped define Museum Island as a modern museum ensemble.
