The Cultural Landscape Foundation

Its website provides a search portal to a database of hundreds of pioneers of American landscape design and their built works.

TCLF's catalogue of entries ranges from profiles of 19th century icons like Frederick Law Olmsted to modernist masters like Dan Kiley.

As an advocate for threatened landscapes, the organization has also stopped the destruction of over 50 important gardens and landmark parks through its highly publicized annual Landslides list.

These guides were created in partnership with the National Park Services’ Northeast Regional Office in 2016 to celebrate its 100th anniversary.

[7] TCLF launched the Cornelia Hahn Oberlander International Landscape Architecture Prize in 2021, which includes a $100,000 award and two years of public engagement activities.