Online maps that we use for directions use the Mercator projection, and this tends to dictate how we perceive the size of countries and continents. If you look at the world map on Google, for example, Africa doesn't look that much bigger compared to China or the United States. In reality though, it's a lot bigger. Kai Krause scales countries by their area in square kilometers and then fits them into a Africa's borders for some perspective.
This one's for you, cartographers. What do you think?