A significant part of ORHPA’s mission is to work to preserve selected historical buildings of the WWII city and nuclear installation. This area of our site will continue to document successful and ongoing historical preservation activities by our members.

  • K-25 Site

    K-25 is a former uranium enrichment facility of the Manhattan Project which used the gaseous diffusion method. The U-shaped K-25 building measured half a mile by 1,000 feet (300m) – over 2,000,000 square feet (190,000 m2). This entire site is now called the East Tennessee Technology Park.

  • Birth of a City Monuments, Dedicated September 8, 2011

    The monument consists of a series of four, new historical markers located in front of the Oak Ridge Municipal Building at 200 South Tulane Avenue. The project was supported by the city’s Preserve America grant, which was awarded in 2008 to help tell the story of Oak Ridge’s formative post-war...