テレビ塔[terebitou] TV tower
バベルの塔[baberunotou] Tower of Babel
監視塔[kanshitou] watchtower
管制塔[kanseitou] control tower
供養塔[kuyoutou] memorial tower

金字塔[kinjitou] pyramid
五輪の塔[gorinnotou] five-story pagoda
広告塔[koukokutou] billboard
象牙の塔[zougenotou] ivory tower
信号塔[shingoutou] signal tower