Anyone have any "off the beaten path" stuff we could do for a day or half day? We're visiting my 90 yo grandmother but she'll only have the energy for an hour or two, so the rest of a 4 day trip is probably open. I've been to NYC a number of times and done a bunch of the regular stuff but this will be DH's first (and probably only) trip there. We are NOT city folk at all and much prefer wilderness/outdoor/physically demanding vacations. I was sort of wondering if there is any type of stuff that would be sort of along those lines, maybe a historical subway/sewer tour, urban exploration or climbing or some other unusual thing. The only thing I can think of that's even sort of close is the Bronx zoo. That would be OK, I guess, but I figured I'd ask about the more unusual stuff if anyone knows. My relatives won't-they think shopping is the height of fun and my parents, who will be with us, will likely prefer Carnegie Hall to crawling through old sewers