Update Winter 2006: The hubba(s) were all torn down, the ledge to ledge gap is gone, and about half of the marble benches that you were never able to skate anyways are gone due to renovations.

Lincoln Center, terrain-wise, is the best spot in Manhattan, bar-none [well, either Lincoln Center, or Battery Park City]. But granted the fact that skating it for more than thirty seconds (literally) is a blessing, it's not even worth going into detail about the stuff that you can't skate. There's stuff around the actual complex that is skateable and isn't an immediate bust. In front of the main entrance from 66th Street, is the famed eighteen-stair hubba ledge. You have to curve into it in order to skate it, and dodge a planter at the bottom if you actually manage to make it all the way down. In front of it is a narrow, four-foot long ledge to ledge gap, and a manual pad that's about seven feet long and a foot high running alongside it. To the corner of the hubba ledge is a small structure under a roof that has a foot-and-a-half high marble ledge over three steps, or just a plain ledge/manual pad if you choose to approach it from the sidewalk.

Not taking into account all the other stuff that there is to skate here, if you just stay on the outside of the complex, you should get at least a half hour before a security guard roams around, although it's still best to go at night.

66th Street and Broadway. Take the 1 or 9 to 66th Street and it is right outside.