H101
Why is north at the top of the map?
North-up feels like the correct way to hold a map, and a south-up map looks upside down. But Earth floats in space, where there is no up.
North at the top
How most maps have been printed for about 500 years
South at the top
The same map, turned around. Nothing is wrong with it.
Which way is "up" on a map is a choice, and the choice shapes what looks big, central, and on top. The Arab geographer al-Idrisi drew his famous 1154 world map for King Roger II of Sicily with south at the top. Many medieval European maps put east at the top, which is why finding your direction is still called "orienting" yourself, from the Latin for east. North-up became standard after European printers revived the ancient Greek geographer Ptolemy, whose maps put north on top, and the magnetic compass reinforced it.
Turning a familiar map around makes it look strange, even though nothing about the places has changed. When something looks "upside down" or "wrong," ask whether it is wrong or just unfamiliar.
Try it somewhere else
Most people describe Australia as "down under" and Europe as "up" there.
Is there anything about Earth itself that makes one of them "up"?
South-up maps today
In 1979, Australian Stuart McArthur published his "Universal Corrective Map of the World" with south at the top, partly as a protest against the "down under" label. South-up maps are now sold widely, and turning a map around is a common classroom exercise for noticing how much of a map's meaning comes from habit.
Related exhibits
Sources: Al-Idrisi's Tabula Rogeriana (1154) and medieval mappae mundi: Library of Congress; Encyclopaedia Britannica. Ptolemy's Geography and its Renaissance revival: Encyclopaedia Britannica. Stuart McArthur, Universal Corrective Map of the World, 1979. Map: Natural Earth country outlines, Equal Earth projection.