Weehawken, NJ sorry, I've "been" to it:

"...a grassy shelf about 20 ft (6.1 m) above sea level and attached to the 
Palisades. This ledge, long gone, hosted 18 documented duels and many 
unknown between the years 1798–1845, the most famous being that between 
General Alexander Hamilton, first Secretary of the Treasury, and Colonel 
Aaron Burr, sitting third Vice President of the United States, which took 
place on July 11, 1804. The duel was re-enacted on July 11, 2004, the 
200th anniversary of the fatal duel, by descendants of Hamilton and Burr.
[1]" - Wikipedia