Arbor Water, a glacial pond formerly located near the entrance of The Green-Wood Cemetery, ca. 1870.

Arbor water was one of several glacial ponds on the land that would become Green-Wood. It was filled in in 1911 to make space for Green-Wood's Historic Chapel, designed by architects Warren & Wetmore and completed in 1912. As seen in this photo, rowboats were once available for cemetery visitors to take out on the water.