Sue says…

Elevators in One World Trade Center Feature a Virtual Journey Through 500 Years of NYC’s Skyline

From the site:

One surprising thing glimpsed on the way up: the old World Trade Center Towers destroyed in the September 11 attacks. Rather than ignore history, or glorify it, the towers have been included for the length of time they existed – in this speedy timeline, that spans about 4 seconds.

http://www.visualnews.com/2015/04/21/elevators-in-one-world-trade-center-feature-a-virtual-journey-through-500-years-of-nycs-skyline/