The cache is located along Museum Mile (a portion of Fifth Avenue), very close to the Jewish Museum. Several blocks down from the cache is the Guggenheim Museum, and several blocks up is The Museum of the City of New York. There are five other museums along Museum Mile, all of which are worth visiting.
The cache is a bison tube. Please re-hide as found, in exactly the same place.
Also, check out my other cache New York's Bravest (GC39R4H).