A Dutch artist has included an image of the 11 September 2001 attacks on the World Trade Center in a stained glass window he designed for a cathedral.
Marc Mulders said the image, one section of a 20-pane window showing representations of heaven and hell, was intended to depict "hell on earth".
The pane shows an aeroplane flying into one of the twin towers.
On Sunday, a bishop blessed the window at the Sint Jan cathedral in the Dutch city of Den Bosch.
"It was an assignment by the church to make a stained glass window that was related to the spirit of this time," Mr Mulders wrote on his website.
Geert Jan van Rossem, pastor of the cathedral, said he expected the window would make people reflect.
"Innocent civilians were killed, that is shocking and makes people think," he said.
Nearly 3,000 people died in the 11 September 2001 attacks.