An official website of the United States Government 
Here's how you know

Official websites use .gov

A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS

A lock ( lock ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Photos

Snapshots of what’s happening in the Defense Department.

An old, black-and-white photo shows a structure under construction.

Washington Monument

The Army Corps of Engineers built the Washington Monument, which opened in 1884. This image shows the monument as it was being constructed in 1860.

  • Download: Full Size (1.33 MB)
  • Credit: Mathew Brady, courtesy of the Library of Congress VIRIN: 600422-O-ZZ999-001M.JPG
Photo Gallery