Tower

Ruined Tower by Thomas Cole, circa 1832-36.

A tower is a tall, thin building. In Medieval times, castle towers served the purpose of a lookout tower across the surrounding terrain, or else a prison. Churches were also built with towers or steeples to contain bells.

• The Twin Towers of the former World Trade Centre, New York
• The Tower of London
• The Tower of Babel
• The Leaning Tower of Pisa
• The Two Towers by J.R.R. Tolkien (Book)

• Ivory Tower
• Citadel
• Castle