A webcam content provider is marking the 12th anniversary of the September 11th attacks with the release of some time lapse video.
It begins with the start of construction at the World Trade Center site in October 2004 and ends earlier this month.
It was released by Earthcam.
The group website also has an interactive view of the site, allowing you to find out more information about buildings in the area.
To view the video, visit earthcam.com/worldtradecenter.