The Bronx Zoo was founded by the Wildlife Conservation Society in 1899. Since its inception, it has dedicated itself to the conservation of the natural world - displaying 6,000 animals across 256 acres in replicated habitats.

While New York City is certainly best known for its towering skyscrapers and classy historic districts, its earliest monuments of stone are just that: stone. The geologic landscape of the city was formed between 20,000 and 18,000 years ago with the movement of the Wisconsin Ice Sheet down from Canada. The rock and debris deposited from the ice sheet, as well as the valleys it deepened, bedrock it smoothed and glacial grooves it left, formed the landscape of the city that began to grow in the colonial era. In some cases the rocks have been moved or crumbled in the name of urban development. But some of this geologic history can still be seen within the urban environment. This collection highlights some of the more well-known geologic features.

The Rocking Stone is an example of a glacial erratic left stranded by the masses of ice during the last Ice Age. Even before the Bronx Zoo opened, the Rocking Stone was a popular attraction because, being perfectly balanced on a rocky drift, a small push would easily set it swaying. (Alas safety concerns have meant that the 30-ton stone has long since been swayable.)