A control tower is the tall building from which aircraft are directed. Call the control tower.
The height is for the view, since controllers there work by looking as well as by radar. A control tower has its glass sloped outwards to stop reflections at night.
1nouncontrol towerThe tall building from which aircraft are directed.
“The control tower cleared them to land on the second approach.”
control tower is a building.
Practised in Airport & Flying