The O-Line

Historical marker location:

3001 Connecticut Avenue Northwest, Smithsonian National Zoo, District of Columbia

( Marker is on Olmsted Walk.)

Smithsonian's National Zoo. 125 Years

The District was the site of a major earthquake in 2011: On August 23, 2011, a 5.8 magnitude earthquake struck the East Coast of the United States, with its epicenter located in Mineral, Virginia. The quake was felt strongly in Washington, D.C., causing damage to several buildings, including the Washington Monument and the National Cathedral.