Saturday morning in April was a warm one - for a change. Our guide Suzanne, assisted by Mike, took us on a lovely walk around the south end of the park, stopping for yoga stretches at strategic points whilst telling us fascinating facts about the park. (That same shist rock in the park is the foundation under the WTC as we found out on another tour later that morning). Really interesting stuff, fresh air, spring blossoms and sunshine. I strongly recommend you take this tour to kick start your weekend and make the most of your stay in the city.