7. Until a Few Decades Ago, There Was a Blockhouse from 1812 in Morningside Park
Blockhouse from War of 1812 in Morningside Park. Photo from Library of Congress.
A blockhouse was built on top of a glacial outcropping in what is now Morningside Park as a military fortification for the War of 1812 against the British. It was one of three built here, similar in style to the one that still stands in Central Park. This one in Morningside Park was torn down a few decades ago. However, you can still see the glacial outcroppings at
Some of the glacial rocks underpinning PS36