Final answer:
A bell tower is a tall structure that houses bells and is used to make a ringing sound. The Leaning Tower of Pisa is an example of a famous bell tower. Bell towers can vary in design and have cultural significance.
Step-by-step explanation:
A bell tower is a tall structure, usually located near a church or cathedral, that houses one or more bells. It is used to make a ringing sound to signify different events, such as the start or end of a religious service, or to mark the passing of time.
An example of a famous bell tower is the Leaning Tower of Pisa in Italy, which is part of the Pisa Cathedral complex. This bell tower started leaning even while it was being built in the 12th century due to unstable ground.
Bell towers can vary in height and design, and they often have historical and cultural significance in the communities where they are located.