For a short local ride, one of my favorite destinations has become Concrete Plant Park. For one thing, I just love the idea that someone converted an old factory to a park. Better yet, whoever conceived of the park was absolutely brilliant in actually incorporating the old machinery into a recreation area.
The concrete path you see is a bike/pedestrian path that is being extended along the Bronx River. With the old cement plant on one side of the river, and some old brick factory and warehouse buildings on the other, the park feels rather like an old New England mill town, especially in the spring and fall.
What is also interesting is that every kind of transportation, except for aviation, intersects there:
Motorized vehicles are not allowed on the path. But, just outside of the park and under the railroad trestle (where, if you look closely, you can see a passing New York City transit train) is the bridge for Westchester Avenue. And, when I was there the other day, motorboats stuttered over the surprisingly choppy water.
I understand that the Parks Department plans to extend the path along the entire length of the Bronx River to Westchester County, a distance of about ten miles. That would definitely make for one of the more interesting urban bike lanes. Actually, it already is: We just need more of it.