Pisa (; ) is a city in
Tuscany,
Central Italy, straddling the
River Arno just before it empties into the
Tyrrhenian 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 89,940 residents (around 200,000 with the metropolitan area) contains more than 20 other historic churches, several medieval palaces and various bridges across the River Arno. Much of the city's architecture was financed from its history as one of the Italian
maritime republics.