On Bank Square, in the former Stock Exchange building, we find this amazing collection of European paintings. The neoclassical style dates from the 19th C. Recognisable by its rotunda capped with a dome, it was the work of A. Corazzi (architect of the Grand Theatre). The collection, bequeathed by a couple of patrons to the Warsaw church, contains some 400 works by the greatest painters of the past six centuries, such as Rubens, Van Gogh, Renoir, Goya and many others.