there's a note at the top of the bridge

What about twins tower?

There's a mini statue of liberty figure at the top of one of the buildings near the office building with the two elevators that you can pick up, but I can't figure out what it does...

Theres an interactable broken bloody sink at the park toilet. Find out what that interactable sink does

I heard strange sounds inside the central hospital if you stay there long enough..
There's a specific "manager's office" that has an open-able vent that you can hide inside of.

weird glitchy guy in the under construction buildin

Recently when I was in the Big Park I heard one of the phones rang and when I interacted with it some Voice will answer you and giVe you instructions to look for an object in a certain place (I won't specify what it says, mainly because idk if it's always the same dialogue (I only encountered it once as of now))

Also; In the manison, as well as in the MIB HQ there's hidden buttons that open sth.

@Donald Dank There are more mini statues like this trough the map, i belive we have to find them all!

Like Donald Dank said, there are mini statues around the map that you can press E on, heres all the ones i found, there are probably more.

- On the lower roof corner of a building with "CITY OF NEW YORK" on it near the double helipad on Governor St.

- At the very end of the EXPRESSWAY st in Hillside, go to the left tunnel, go up the small hill aside it and it should be there.

- On the right of Greenharbor junkyard, there should be a space between the fence and the trees, go to the far right corner of that space and it sould be there.

Thats all i could find, im guessing we have to find 4 of them but there could be more.
Im pretty sure this will activate something with the statue of liberty that we see in the sky box so keep an eye on it if you find any more of these.

Heres anothey cool easter egg i found, on the very end of LONELY Rd in Greenharbor, just on the right of the SOUTH SIDE tunnel, there should be a grey door, it looks like a flat texture and blends really well with the texture of the building but if you click E on it, it opens, slowly.
After that keep opening all the other little doors behind it untill you get to the "message".
Once you get to the "message" press E on it, it should close the last door you opened but if you open it back, the "message" is gone! I don't know if it does anything else tho.

I found all the liberty statues. If you find all of them it makes an audio cue and changes the stance of the statue of liberty outside the map.

1.On the building that connects to the office with the two elevators

2.In Union City after getting off the bridge if you go straight there are two tunnels, go left up the hill and one is there

3.At the green harbor junkyard (there is a sign) look to the right where the tree is outside the fence, got to the back right corner and one is there

4. In Chinatown go to the warhouse, when facing the warehouse standing outside look to the left adjacent building, on top and behind it should be that one

5. Next to the train tracks tunnel in union city there are two residential buildings, one red and one brown brick buildings, on top of the brown building there is one (For clarification the tunnel that has the mansion next to it)

6. The last one is in the park. Behind the telephone there is a bush on the hill, go inside the bush and the last one is in there.

Once you collect all of them you will hear an audio cue and lady liberty will have changed into a sitting position where she appears to be on a smoke break

Additional secrets:

-In the nightclub on top of the light rig on the dance floor there is a disco ball, interacting with it will activate disco mode

-In the building behind the Italian restaurant the one with the grant bell beer sign there is an all black room, the black room has an invisible button which when interacted spawns a literal easter egg

-The times square building (the one with the cup noodles ad) the admin room is behind the whosang ad there are credits and the ability to block off one of the sections

Thank you so much!

Id like to add that the moon button in the admin room changes the moon to red

"The Blood Moon is rising..."