This is a collection of “persuasive” cartography: more than 800 maps intended primarily to influence opinions or beliefs - to send a message - rather than to communicate geographic information.
Many standard maps but also many fanciful images as well. Geographical Guide to a Man's Heart with Obstacles and Entrances Clearly Marked. Geographical Guide to a Woman's Heart Emphasizing Points of Interest to the Romantic Traveler.
The David Rumsey Map Collection contains more than 150,000 maps focused on rare 16th through 21st century maps of North and South America, as well as maps of the World, Asia, Africa, Europe, and Oceania. See for example Mapping the Heavens, 1693 created by Ignace Gaston Pardies.
Google Arts and Culture allows you to "discover artworks, collections and stories from all around the world in a new way. Explore cultural treasures in extraordinary detail and easily share with your friends." (website)