One of Innsbruck's most historic attractions is the Hofburg, or Imperial Palace, which Maximilian I and Archduke Sigmund the Rich commissioned to be built in late Gothic style in the 15th century. Center stage is the Giant's Hall —designated a marvel of the 18th century as soon as it was topped off with its magnificent trompe-l'oeil ceiling painted by Franz Anton Maulpertsch in 1775. The rococo decoration and the portraits of Habsburg ancestors in the ornate white-and-gold
great reception hall were added in the 18th century by the Empress Maria Theresa; look for the portrait of "Primal" (primrose)—to use the childhood nickname of the empress's daughter, Marie-Antoinette. On the first floor is the Alpine Club Museum, open daily all-year round 9am tto 5pm.