Italy Tower of Pisa

Since my childhood, I always used to admire this classic building until now, the Tower of Pisa in Italy (La Torre di Pisa)which is the campanile, or freestanding bell tower, of the cathedral of the Italian city of Pisa. It is situated behind the cathedral and is the third oldest structure in Pisa's Piazza del Duomo (Cathedral Square) after the cathedral and the baptistery. Although intended to stand vertically, the tower began leaning to the southeast soon after the onset of construction in 1173 due to a poorly laid foundation and loose substrate that has allowed the foundation to shift direction.
The tower presently leans to the southwest.I think it would be a great travel place for you and your little children coz besides traveling, children can also learn about the history.