The Baroque palace is located next to the square in the House Number 15. You can reach it by walking through a narrow alley that is next to the Archbishop's Palace but you cannot see the palace directly from the square. The palace was ordered to be built by a wealthy nobleman, Václav Vojtěch von Sternberg, in the years 1698-1708. The leading architects such as, Domenico Martinelli, Christoph Dienzenhofer or Battista Alliprandi, contributed to the construction of the palace. The two-storey palace has four wings, a square yard and a small garden.
After the Palace was bought by the Society of Patriotic Friends of the Arts in 1811, it served as the first public art gallery in Prague. The palace was also used by the pioneers of Czech science. Since 1872, the palace housed the Institute for the handicapped and it was called Ernestium. It was under the management of the Society of ladies and girls of St. Anna. The palace was adjusted to the need of the National Gallery in 1946-1948 and currently, there is a permanent exhibition of old European art.
On the ground floor there are collections of German and Austrian art from the 16th - 18th centuries. For example, one jewel of the exhibition is the Rosary Celebration by Albrecht Durer, the image was acquired for Prague by Rudolf II.
On the first floor there are either ancient monuments or the art of Italian masters of the 16th - 18th Centuries.
On the second floor you can admire Italian, Spanish, Dutch and French masters of the 16th-18th century. There is Tintoretto, El Greco, Goya, Rubens, van Dyck and Rembrandt. The National Gallery often complements the exhibition with accompanying programs.