Rare double page map of Portugal in glorious full color, from Rizzi-Zannoni, the Royal Georgapher of France. One of the most highly detailed large format maps of Portugal published in a commercial atlas during the period. Includes exceptional detail, showing towns, roads, rivers, mountains, lakes, and many other minor details. The engraving style is uniquely topographical for the period. Decorative cartouche in original color. Second title at the top in French. A fine wide margined example. The first time we have ever seen the map.