National AIDS Memorial Grove

The dell was developed into a landscape feature in 1902 by John McLaren, with funds donated by Joseph de Laveaga; McLaren used a natural seasonal spring and created a rockery cascade under the canopy of oaks. Before that the site was called the Deer Glen and was a fenced compound housing the park's deer collection. The area fell into disuse and became overgrown until 1991, when a volunteer group chose the site for the AIDS Memorial Grove.