Tower (noun)

1. A tall, narrow building or structure, typically with a pointed top.
2. A tall, narrow structure, typically with a pointed or rounded top, used as a defensive structure, a monument, or a lookout point.

Origin:

From the old english word "torr" meaning high building or steep hill.

Examples:

1. The tower of the cathedral is visible from miles away.
2. The Eiffel Tower is an iconic landmark in Paris.
3. The tower was used as a watchtower for the castle.
4. The tower was made of stone and was very strong.
5. Many tourists climbed the tower to get a panoramic view of the city.