Thank you.

My contribution, ode to late 60's NYC, in return:

A survivor: The Sphere, by Fritz Koenig, commissioned 1966; World Trade Center, 1971-2001;  Battery Park (a little worse for the wear,) 2002-present.

Photo source: Trek Earth

Note the iconography, from Wikipedia:

The artwork was meant to symbolize world peace through world trade, and was placed at the center of a ring of fountains and other decorative touches designed by trade center architect Minoru Yamasaki to mimic the Grand Mosque of Mecca, Masjid al-Haram, in which The Sphere stood at the place of the Kaaba.^[2] It was set to rotate once every 24 hours, and its base became a popular lunch spot for workers in the trade center on days with good weather.

At its current location in Battery Park, a plaque alongside The Sphere reads as follows:

For three decades, this sculpture stood in the plaza of the World Trade Center. Entitled "The Sphere", it was conceived by artist Fritz Koenig as a symbol of world peace. It was damaged during the tragic events of September 11, 2001, but endures as an icon of hope and the indestructible spirit of this country. The Sphere was placed here on March 11, 2002 as a temporary memorial to all who lost their lives in the terrorist attacks at the World Trade Center.
This eternal flame was ignited on September 11, 2002 in honor of all those that were lost. Their spirit and sacrifice will never be forgotten.^[3]