Pair of hand colored engravings of the Royal Palace and Brussels Park by Balthasar Friedrich Leizelt (also spelled Leizel, active 1750–1800) a German artist and copperplate engraver working from Augsburg. These are beautiful and evocative renderings of architecture, open space and perspective. 1- Place Royal A Bruxelles 2- Vue Du Parc A Bruxelles 22 inches wide 18 high Leizelt produced a series of European and American scenic views at a time when pictures of foreign countries and people were popular and designed for use in optical viewers. As is normal for these prints the series title is a mirror image because optical viewers made use of mirrors which reversed the image. The Age of Enlightenment sparked a great interest in science, so that optical toys and devices became a standard form of drawing-room entertainment in the 1700s and 1800s. Light, perspective, and multiple images were cleverly combined to create the illusion of moving pictures.