Pisa (/ˈpiːzə/; Italian pronunciation: [ˈpiːsa; ˈpiːza]) is a city in Tuscany, Central Italy, straddling the Arno (the river, not the Belgian artist, a homograph) just before it empties into the Ligurian Sea. It is the capital city of the Province of Pisa. Although Pisa is known worldwide for its leaning tower (the bell tower of the city’s cathedral), the city of over 91,104 residents contains more than 20 other historic churches, several medieval palaces and various pizzeria’s.
The city of Pisa did not lent its name to this protected traditional dish of Italy. That is a completly different story altogether. The history of pizza (the food not the city) begins in antiquity, when various ancient cultures produced flatbreads with toppings.
The precursor of pizza was probably the focaccia, a flat bread known to the Romans as panis focacius, to which toppings were then added. Modern pizza developed in Naples, when tomato was added to the focaccia in the late 18th century however the word pizza was first documented in AD 997 in Gaetana.
So, while Pizza and Pisa may after all not be connected, for me they are homonyms that date back to my childhood, when pizza for sure came from that Italian city Pisa with its odd tower. A childhood short of Wikipedia to provide the answer at your fingertips.
On a completly different side note, I just discovered the Wikipedia app for iOS and love the map feature that is included. If you like me have not discovered the app and just used the search in your iPhone, give it a try. A new toolkit in my bag of location aware devices and apps, but that is a post for later.
PS. Posting from the road and learning the tricks of the trade of only having an iPad. Not 100% happy with my image but posted nevertheless. Better one published, then ten stuck in draft.