Graffiti artists are pushing to have the 5 Pointz warehouse complex recognized as a historical landmark.
They held a fan appreciation day Saturday to rally fellow supporters.
The owner plans to tear 5 Pointz down in order to build two residential towers on the property.
Artists recently lost a lawsuit to stop the demolition.
Now, supporters hope that approval from the Landmarks Preservation Commission could help save the building, despite having their initial application rejected.
"It took seven applications for Grand Central to be considered," said one person. "So we only submitted once. We're submitting a second time."
"This place is historical in the hip-hop world, in the graffiti world," said another.
"All this artistry took a lot of effort. It took a lot of time. It was definitely organized," said a third. "So I think it definitely should get its fair share."
The artists estimate that they collected more than 20,000 signatures to make 5 Pointz a landmark.