
It will be replaced with a permanent cross when the St. Nicholas National Shrine, in Lower Manhattan, opens in the first half of 2018.
Source: Cross Takes Its Place, Temporarily, Atop Shrine at World Trade Center – The New York Times

It will be replaced with a permanent cross when the St. Nicholas National Shrine, in Lower Manhattan, opens in the first half of 2018.
Source: Cross Takes Its Place, Temporarily, Atop Shrine at World Trade Center – The New York Times