In my opinion, the northern end of Central Park is overlooked and under appreciated. One of my favorites things to do is to start in the Upper West Side, at '
The Pool' near the 103rd Street Subway stop and walk north east along what is called
The Loch walking path. I prefer the path on the southern side of the ravine. Some nice
waterfalls,
Glen Span and
Huddlestone arches, etc. and it brings you out at the
Harlem Meer at the NE corner of the park. The
Conservatory Garden runs along Fifth Avenue, right below the Harlem Meer and are across the street from the
Museum of the City of New York and
El Museo del Barrio.
If you decide to do the Met Museum, check out their Roof Garden, which also has a small bar. It can get crowded, but it's open until 8pm on Fri&Sat and watching the sun start to set over Central Park and the skyline of the Upper West Side is pretty special.