Hess Triangle (us-new-york)
Type: historic=monument
Coordinates: 40.7946380897827, -74.11412860064783
Area: 3.30078125e-07 km²
OSM tags:
access: permissive
historic: monument
inscription: Property of the Hess Estate which has never been dedicated for public purposes.
material: concrete
name: Hess Triangle
name:cs: Hessův trojúhelník
note: see also: http://chriswhong.com/open-data/in-search-of-hess-triangle-part-1/

https://www.mentalfloss.com/article/552583/david-hess-spite-triangle-that-marks-century-old-grudge-against-new-york-city
website: https://www.atlasobscura.com/places/hess-triangle
wikipedia: en:Hess triangle