Skyscrapers in this dataset are not necessarily completed.

Certain outliers were not able to be drawn on the chart, as they were quite far outside the bounds of the canvas, and too small in count to justify a logarithmic scale y axis as that would distort the box plot itself.

Height of outliers not included: 518, 541.02001953125, 541.29998779297, 609.48999023438, 609.59997558594, 1609.3599853516

Also, I could not find from the dataset the unit of height used, but it as it is an international dataset and many current buildings built during the duration of the dataset are over the largest value if it were in feet, I have written meters as the unit of height.