Clearly visible but fenced off from the rest of Central Park, the Hallett Nature Sanctuary is a 4-acre piece of land that was completely controlled by flora and fauna for 67 years. People frolicking by the lake at the southeast corner of the park can see it, but they can’t enter it.

6-hallett nature sanctuary central park untapped cities IV

In 1934, NYC Parks Commissioner Robert Moses sealed off this natural woodland area, preserving it as a bird sanctuary. For decades, it served as a sort of experiment, showing the Parks Department what would happen to the land if they did nothing to maintain it. In 1986, it was renamed to commemorate George Harvey Hallett, Jr., a naturalist, birdwatcher, and civic leader. It remained untouched until 2001, when the Conservancy began to restore it, reintroducing native plants and weeding out invasive species.

Hallett Nature Sanctuary path Central Park NYC Untapped Cities

In 2013, the Conservancy opened the Hallett Nature Sanctuary up to the public for the first time in 79 years. Today, the Conservancy constantly tends the plants, though they’re unsure of how many plant species thrive here. They’re working to increase the numbers of birds and butterflies too.

“As a result of the removal of invasive plant species and the introduction of a diverse array of native trees, shrubs, and herbaceous plants, the Hallett Nature Sanctuary is more diverse and healthier than ever,” says a statement on the Conservancy’s website. Yet, human intervention is limited. When a large tree was uprooted by Hurricane Sandy, it was left to become part of the natural habitat instead of being cleared away.

4-hallett nature sanctuary central park untapped cities VI

3-hallett nature sanctuary central park untapped cities VII

It’s pretty amazing to see the striking contrast between the overgrown wooded area and the buildings behind it on Central Park South. The Hallett Park Sanctuary boasts a promontory overlooking the lake, the Gapstow Bridge, and the buildings just beyond.

5-hallett nature sanctuary central park untapped cities V

9-hallett nature sanctuary central park untapped cities

8-hallett nature sanctuary central park untapped cities II

7-hallett nature sanctuary central park untapped cities III

1-hallett nature sanctuary central park untapped cities IX

The Hallett Sanctuary is open everyday from 10 a.m. until half an hour before sunset. A. It’s located just south of the Wollman Rink on the eastern edge of the park between 60th and 62nd Streets.

Next, read about the other Secrets of Central Park. Get in touch with the author @lauraitzkowitz.