The tower of the Vulcan monastery at P'Jem at sunrise
A tower was a tall and high structure often attached to another building.
A communications tower was part of the colony on Terra Nova. (ENT: "Terra Nova")
In June of 2151, a commando of the Andorian Imperial Guard searched the monastery at P'Jem for a secret listening post. The eastern tower of the sanctuary was searched several times by Keval and Thon. (ENT: "The Andorian Incident")
In 2257, after Michael Burnham was rescued from an asteroid, Captain Christopher Pike expressed his contentment at seeing her looking physically better by saying he couldn't have her "walking around looking like that tower in Pisa." (DIS: "Brother")
According to the Greek author Homer, the city of Troy was besieged and destroyed by the Greeks in a war in about 1200 BC. Upon seeing Yeoman Teresa Ross, Trelane remarked on her beauty inquiring if hers was "the face that launched a thousand ships and burnt the topless towers of Ilium?" (TOS: "The Squire of Gothos")
In 2374, in the holoprogram Leonardo da Vinci's workshop, Leonardo da Vinci informed Kathryn Janeway that he had written to the King of France about his adventures in the New World. In the letter, he invited the king to soar with him from the towers of his castle. (VOY: "Concerning Flight")