812 CE - Pisa becomes part of the March of Tuscany (territory) of the Holy Roman Empire. 990 - San Michele in Borgo monastery founded. 1003 - Lucca-Pisa conflict occurs. 1004 - Pisa sacked by Saracens. 1063 - Pisa Cathedral construction begins. 1011 - Pisa sacked by Saracens. 1092 - Roman Catholic Archdiocese of Pisa established. Interactions Between Space and Non-Space (15) Space Technology Hall of Fame and Space Certification (15) Workforce (154) U.S. Space Workforce (103) U.S. Space Industry Employment (46) U.S. Space Industry Outlook (16) Trends and Events Affecting U.S. Employment (16) Space Foundation Survey of U.S. Companies (4) NASA Civil Servant Workforce (24). Pisa (/ ˈ p iː z ə / PEE-zə, Italian: or) is a city and comune in Tuscany, central Italy, straddling the Arno 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 (around 200,000 with the metropolitan area) contains more.
Pisa is an Italian city famous for its leaning tower. It is located in the region of Tuscany, in west-central Italy.
Pisa lies on the Arno River. The city was on the coast of the Mediterranean Sea until the 1400s. But over many years, the Arno deposited soil and sand at its mouth, creating an area of land called a delta. Now Pisa is about 6 miles (10 kilometers) east of the Mediterranean.
Walls built in the Middle Ages surround parts of the city. Within the walls is the Piazza del Duomo, which is also known as the Square of Miracles. The square contains Pisa’s most famous structures: the Duomo, or cathedral; a round building called the baptistery; and the campanile, or bell tower. All three are built of white marble. The United Nations Educational, Scientific and Cultural Organization (UNESCO) declared the Piazza del Duomo a World Heritage site in 1987.
The bell tower is better known as the Leaning Tower of Pisa. It was constructed between 1173 and the mid-1300s. After three of the eight stories were built, one side of the tower began to sink into the soft ground. As builders completed the tower, they tried to fix the leaning problem, but they failed. By the late 1900s the tower had tilted so far that people feared it would fall over. In 1990 engineers began removing some of the earth beneath it. The work made the tower more stable, but it did not completely straighten it.
Tourism, education, and transportation are important to the economy of Pisa. Many visitors come to see the city’s architecture. Tens of thousands of students attend the University of Pisa, founded in 1343. The city’s international airport is named after the scientist Galileo, who was born in Pisa.
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Pisa served as a naval base under the ancient Roman Empire. After the collapse of Rome, Pisa developed into an independent power called a city-state. In the 1000s Pisa joined forces with Genoa, another Italian city-state. But in 1284 Genoa defeated Pisa in a battle at sea. In the 1400s Florence (the main city of the region of Tuscany) took over Pisa. As a part of Tuscany, Pisa joined the new Kingdom of Italy in 1861.
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