Paradise Square (now covered by the Foley Square Courthouse, in background), at the The Five Points.
For Irish immigrants of the mid-1800's it was a hotbed of poverty and violence. A fictional representation
of this era has been depicted in the film Gangs of New York (tip: view the "enhanced" version of this website).

The star marks the Five Points. Paradise Square is marked by the pink triangle.
(Old now-defunct streets in light grey. Many street names have changed over the years).
Atratus has more information on the streets, plus more views of them.