We did two walking tours with Uncle Sam's, the 9/11 WTC tour, and the Edgar Allen Poe tour in Greenwich Village. The WTC tour was very informative and very moving, excellent tour and tour guide, I wrote notes and took pics for my sister (teacher) and her class which they really liked. The Greenwich tour was interesting, the guide was also very good. We rented an apartment with Uncle Sam's (good way to stay in NYC short term) so our tours were complimentary with the apartment.