Looking north towards East Harlem, there's this one:
And a glance into the water may be rewarded with a picturesque sailboat, like so:
I'm more intrigued by this monolith, though:
It's actually a highway sign, sort of. On the other side, facing the traffic on the FDR Drive, is an old runic-looking inscription:
It's a monument to an earlier time. The East River Drive is now called the FDR Drive, and the Triborough Bridge is now called the RFK Bridge. Also, these days we don't usually make street signs out of huge stone menhirs. But I'm glad we did at one time.
I also love details like this iron windmill built into the fence that keeps drunken cyclists from careening into the water.
A bit further South, near Carl Schurz Park, we come to a section known as the John Finley Walk, which has this wonderful sign. (Finley seems to have been an interesting character.)
A walk down the Esplanade will also net you a nice view of the Blackwell Island/Roosevelt Island Lighthouse.
But Roosevelt Island and its parks (including Lighthouse Park) deserve separate attention, which we will save for another—probably very long—day.