Towers are tall structures that are virtually always taller than they are wide, often by a major margin. Towers are typically built to milk their height, and can stand alone or as a part of a bigger structure. A modern kind of tower, the skyscraper, uses less ground space as a proportion of total building interior sq footage.Skyscrapers are commonly not categorized as towers, though most have the same design and structure of towers.

In Britain, tall domestic buildings are called tower blocks.The tower through history has supplied its users with an advantage in surveying defensive positions and getting an improved view of the near by areas, including battlefields.They were installed on defensive walls, or rolled by a target ( see siege tower ). Today, strategic-use towers are still used at jails, military camps, and defensive fringes.

*Potential energy
by utilizing gravity to move objects or substances downward, a tower are often used to store items or liquids like a storage silo or a water tower, or target an object into the earth like a drilling tower. Ski-jump ramps use the same concept, and with a lack of a natural mountain slope or hill, can be human-made.

*Communication enhancement
In history, straightforward towers like lighthouses, bell towers, clock towers, signal towers and minarets were used to speak info over larger distances. In more recent times, radio masts and cell-phone towers help communication by expanding the range of the transmitter. The CN Tower toranto , Canada was built as a communications tower, with the capacity to act as both a transmitter and repeater. Its design also incorporated features to make it a holiday maker attraction, including the planet's highest observation deck at 147 stories.

*Transportation support
Towers may also be used to support bridges, and can reach heights that rival some of the tallest buildings above-water. Their use is most plentiful in suspension bridges and cable-stayed bridges. The employment of the pylon, an easy tower structure, has helped build railroad bridges, mass-transit systems, and harbors.