by
Claes Jansz. Visscher The history of pictorial maps overlaps much with the
history of cartography in general, and ancient artifacts suggest that pictorial mapping has been around since recorded history began. In Medieval cartography, pictorial icons as well as religious and historical ideas usually overshadowed accurate geographic proportions. A classic example of this is the
T and O map, which represented the three known continents in the form of a cross, with Jerusalem at its center. The more precise art of illustrating detailed bird's-eye-view urban landscapes flourished during the European Renaissance. As emerging trade centers such as Venice began to prosper, local rulers commissioned artists to develop pictorial overviews of their towns to help them organize trade fairs and direct the increasing flow of visiting merchants. When printing came around, pictorial maps evolved into some of the earliest forms of advertising as cities competed amongst themselves to attract larger shares of the known world's commerce. Later, during the
Age of Exploration, maps became progressively more accurate for navigation needs and were often sprinkled with sketches and drawings such as sailing ships showing the direction of
trade winds, little trees and mounds to represent forests and mountains and, of course, plenty of sea creatures and exotic natives, much of them imaginary. As the need for geographical accuracy increased, these illustrations gradually slipped off the map and onto the borders and eventually disappeared altogether in the wake of modern scientific cartography. ==19th century==