many painters of landscapes with Dutch settings, such as Aelbert Cuyp. Other artists who consistently worked in the style were Nicolaes Berchem (1620–1683) and Adam Pijnacker. Italianate landscapes were popular as prints, and more paintings by Berchem were reproduced in engravings during the period itself than those of any other artist. A number of other artists do not fit in any of these groups, above all Rembrandt, whose relatively few painted landscapes show various influences, including some from Hercules Seghers (c. 1589–c. 1638); his very rare large mountain valley landscapes were a very personal development of 16th-century styles. Aert van der Neer (d. 1677) painted very small scenes of rivers at night or under ice and snow. Landscapes with animals in the foreground were a distinct sub-type, and were painted by Cuyp, Paulus Potter (1625–1654), Albert Jansz. Klomp (1625-1688), Adriaen van de Velde (1636–1672) and Karel Dujardin (1626–1678, farm animals), with Philips Wouwerman painting horses and riders in various settings. The cow was a symbol of prosperity to the Dutch, hitherto overlooked in art, and apart from the horse by far the most commonly shown animal; goats were used to indicate Italy. Potter's The Young Bull is an enormous and famous portrait which Napoleon took to Paris (it later returned) though livestock analysts have noted from the depiction of the various parts of the anatomy that it appears to be a composite of studies of six different animals of widely different ages. Architecture also fascinated the Dutch, churches in particular. At the start of the period the main tradition was of fanciful palaces and city views of invented Northern Mannerist architecture, which Flemish painting continued to develop, and in Holland was represented by Dirck van Delen. A greater realism began to appear and the exteriors and interiors of actual buildings were reproduced, though not always faithfully. During the century understanding of the proper rendering of perspective grew and were enthusiastically applied. Several artists specialized in church interiors. Pieter Jansz Saenredam, whose father Jan Saenredam engraved sensuous nude Mannerist goddesses, painted unpeopled views of now whitewashed Gothic city churches. His emphasis on even light and geometry, with little depiction of surface textures, is brought out by comparing his works with those of Emanuel de Witte, who left in the people, uneven floors, contrasts of light and such clutter of church furniture as remained in Calvinist churches, all usually ignored by Saenredam.