Tanner's Spring, 1897.

Tanner's Spring is one of two still-active springs in Central Park. Today it doesn't look like much more than a murky pond or large puddle, but the spring has an interesting 19th-century history. In 1825 free African Americans began buying land in an area between 82nd and 89th Streets and Seventh and Eighth Avenues. The community grew to become Seneca Village and this spring provided the residents with water. The community was evicted in 1857 in preparation for the construction of Central Park.

In 1880 the spring got its name when Dr. Henry S. Tanner, a proponent of therapeutic fasting, began a 40-day fast (under observation) with his only nourishment coming from the water at this spring. Local lore then developed that this water source contained some magically concentrated nutrients.