A view of Central Park an oasis in the middle of concrete. We bicycled around central park on Tuesday 17th April. The guide explained the topography of Manhattan, an island of solid rock metamorphic, which slopes in the middle near canal street - now Chinatown. There is a fault running through central park and therefore the river falls over a waterfall and the ride climbed and dipped accordingly. Exquisite weather spring flowers blooming. Trees budding. We visited Shakespeare's garden and the 'Imagine' site...hawkers everywhere.