With a height variously estimated at between 115 and 150 m (380 and 490 ft) it was among the tallest man-made structures on Earth for many centuries, and was identified as one of the Seven Wonders of the Ancient World by Antipater of Sidon. It may have been the third tallest building after the two Great Pyramids (of Khufu and Khafra) for its entire life. Some scholars estimate that would make the tower the tallest building up to the 14th century.