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National Historic Landmarks Program

This section will introduce you to the NHL Criteria and the necessary requirements for a property to achieve NHL designation.

Page 1: Workshop 2 Overview

Page 2: How do I know if a property is “nationally significant”?

Page 3: What is “a high degree of integrity” and why is it a key requirement for NHL designation?

Page 4: The NHL Program uses six criteria to assess the national significance of a property.

Page 5: Criterion 1

Page 6: Criterion 2

Page 7: Criterion 3

Page 8: Criterion 4

Page 9: Criterion 5

Page 10: Criterion 6

Page 11: Are there any properties that require special consideration?

Page 12: What if my property is one of those requiring special consideration?

Page 13: Checklist

photograph by 7263255 via Flickr
Trinity Site, NM: Here, on the bleak and barren desert of the White Sands Missile Range, crossed by the Jornada del Muerto (Journey of Death) trail, the world's first nuclear device (code name "Trinity) was exploded on July 16, 1945, at 5:29:45 a.m. It had been brought from the Los Alamos Scientific Laboratory in northern New Mexico. The bomb was the forerunner of those dropped on Hiroshima and Nagasaki, Japan, in August of 1945.