This week marks the 20th anniversary of the attacks on the World Trade Center in New York. Thousands of people who worked at the trade center or who witnessed the events of 9/11, or who lost loved ones, have stories about that.

Among these are the artists of the World Views Artists Residency. In a terrible irony, the residency had been started by the Port Authority to put unused office space to work following the earlier 1993 bombing of the World Trade Center to try to draw businesses back. Run by the Lower Manhattan Cultural Council, Worldviews gave each cohort all hours access to the building and six months of workspace on the 91st and 92nd floors of the north tower.

As the name suggests Worldviews brought applicants from around the world, drawn to the prestige of New York and the chance to make work in such a unique space with its dramatic views of the city. Naomi Ben Shahar, Monika Bravo, Simon Aldridge, and Jeff Konigsberg were four of the 15 artists participating in the Worldviews Residency in 2001.

Amid the commemorations and reflections on the meaning of the 20th anniversary of 9/11, we asked them to share their memories of the space, the day and how the experience has affected them going forwards.