Here are the pictures taken at the tri-state monument delineating the state line between NY, NJ and PA. It is NJ’s northernmost point, the ‘northwest corner’ - It is not a geographic extremity of either PA or NY. It lies, basically at the confluence of the Delaware River and the Neversink River in the shadow of I-84.
This spot holds the most interest for people who reside in NJ. Interestingly to access this point, the only real way to get there is to cross into NY, cross the Neversink River and go through the Laurel Grove Cemetery, park the car and walk to the monument.
The monument itself,

Below, I-84, in this picture I am looking west, I am in NY and am looking towards the PA side of the Delaware River.

Looking back across the Neversink River.

In the below picture we see the Tri-State monument in the context of the confluence of the Delaware and Neversink Rivers. You can see that it does appear to be decidedly mid-river.

Below is a previously placed memorial marker which is actually under I-84 and which would make you believe that I-84 actually clips NJ. It does not, the marker clearly gives directions for finding the mid-river point. When this was placed, this monument was possibly the closest point on land to the actual point.

Same monument from the other side, instead of NJ, we see NY.

This is the official mark, looking down. The lines demarking the actual line between the states.

The obligatory picture of some portion of your body being in three states simultaneously. I hope I didn't commit a crime otherwise I am in some serious trouble (subject to prosecution in three jurisdictions)

Here is a panorama of the area with the monument. Beautiful location.

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