The L'Enfant Trust is a public, 501(c)(3) non-profit organization founded in 1978 to protect Washington’s architectural heritage and to preserve the beauty of the city’s streets.

The L’Enfant Trust provides stewardship for over one thousand Washington properties protected by its Conservation Easements - the largest single easement portfolio of any preservation organization in the country. The Trust also fosters community awareness of historic preservation issues through a variety of educational programs and technical resources.

http://www.lenfant.org