Walking the most densely populated cities in the United States.
I agree, the Manhattan skyline is best viewed from New Jersey. Hudson County is a really fascinating place because in so many ways it kind of does feel like the 6th borough, and more New York-y than, say, Staten Island, but really NYC is so many things. It's City Island as much as it is Greenwich Village. Hudson County could be New York, and is arguably an extension of it as being part of the metro area, but is also its own thing and both of these realities are what make it special. I think it's a really cool that places like Union City have maintained their place as homes for the newly arrived, too, even though this is less the case for Hoboken or Jersey City.