1 The Tower of Pisa was built at the end of the 12th century.2 The Tower was found in the city of Pisa in Tuscany, Italy.3 In 1990, it was closed to tourists.4 In 2001,the Tower was reopened.5 The Tower was visited by thousands of tourists every year.1The exterior of the building was covered with stone by them.2 A fourth story was added by the builders later.3 During the middle Ages, stones from the Coliseum were used by people to build new buildings.
