Bayonne NJ. Hudson county Park is flourishing with chestnut trees.
You can make soap with horse chestnut and buckeye.
https://gippslandunwrapped.com/2020/06/03/horse-chestnut-and-buckeye-laundry-soap/
The American chestnut is effectively extinct due to a blight. Finding a blight resistant tree is rare. It's a miracle we have one here.
Discussion
I wonder if they are American? Might be a treasure trove.