The Cultural Landscape Foundation

What The Cultural Landscape Foundation does

The Cultural Landscape Foundation (TCLF) is a 501(c)(3) nonprofit organization founded in 1998 and headquartered in Washington, D.C. Its stated mission is to connect people to places and make shared landscape heritage more visible. The organization serves landscape architects, preservationists, heritage advocates, students, and the general public. TCLF operates four principal programmatic pillars: What's Out There, a searchable digital database cataloging more than 2,800 cultural landscape sites with over 14,000 images; Pioneers of American Landscape Design, a database of more than 1,400 profiles of landscape architects and allied professionals; Landslide, an annual thematic report and exhibition program that has spotlighted more than 150 at-risk landscapes since its 2003 founding; and the Cornelia Hahn Oberlander International Landscape Architecture Prize, a biennial $100,000 award. The organization also produces 24 city and regional guides (six in collaboration with the National Park Service), an oral history project, lectures, tours, conferences, and traveling exhibitions. TCLF monetizes through a nonprofit donation/sponsorship model with financial support from organizations such as the National Endowment for the Arts, Victor Stanley, Bartlett Tree Experts, and ABC Stone; specific financial figures are not publicly disclosed.

TCLF's platform architecture is content-led rather than technology-led: a curated, encyclopedic digital catalog (What's Out There, Pioneers) forms the structural backbone, supplemented by annual advocacy themes (Landslide), high-profile recognition (Oberlander Prize), and event programming (tours, lectures, conferences). Core technology is described as a standard content management/website stack rather than proprietary infrastructure, with multiple registered trademarks protecting brand identity including "Landslide," "What's Out There," "Pioneers of American Landscape Design," and the Oberlander Prize. Beyond content and programming, TCLF has demonstrated legal advocacy capability, including a lawsuit filed against the Department of the Interior alleging National Historic Preservation Act violations related to the Lincoln Memorial Reflecting Pool renovation. The 2021 launch of the Race and Space initiative, spanning the African American Cultural Landscapes guide and other programming, represents a thematic pivot toward surfacing underrepresented cultural narratives. Operating geographies are primarily U.S. national, with selective international engagement evidenced by the Toronto guide and the 2025 Oberlander Prize awarded to a Mexican practice (Mario Schjetnan and Grupo de Diseño Urbano).

Name

The Cultural Landscape Foundation

Legal name

The Cultural Landscape Foundation

Website

https://tclf.org

Company type

Private

Founded year

1998

Operating status

Operating

Headcount range

11–50 employees

Short description

The Cultural Landscape Foundation is a 501(c)(3) nonprofit founded in 1998 that educates the public about America's cultural landscape heritage through a curated database of 2,800+ sites, pioneer profiles, annual at-risk landscape reports, and the biennial Oberlander Prize.

Ownership category

akta.pro rank

Product category

Cultural Heritage Education and Advocacy

NAICS

Museums, Historical Sites, and Similar Institutions (712), Landscape Architectural Services (541320), Museums (712110)

SIC

Services-Amusement & Recreation Services (7900)

akta.pro primary industry

Cultural Centers & Community Cultural Organizations (BPAGAHAD)

akta.pro secondary industries

Indigenous, Ethnic & Folk Arts/Heritage Organizations (BPAGAHAI), Cultural Heritage Institutions (Archives, Historic Houses, Monuments Foundations) (THAJADAI), Environmental Interpretation & Ranger-Led Education Programs (Visitor Education) (THAAAOAJ)

Keywords

• Cultural landscape preservation
• Historic landscape documentation
• Landscape architecture advocacy
• Heritage education programs
• Nonprofit landscape stewardship

Headquarters

HQ city

Washington

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D, Others

Distribution channels3 records

Marketing channels6 records

Core offering

The Cultural Landscape Foundation (TCLF) is a 501(c)(3) nonprofit that educates and engages the public to make America's cultural landscape heritage more visible, identify its value, and empower its stewards. It operates interconnected programs including the What's Out There database of cultural landscapes, the Pioneers of American Landscape Design profiles database, the annual Landslide program on threatened landscapes, the biennial Oberlander Prize, educational events and tours, and oral history projects.

Product overview

The Cultural Landscape Foundation (TCLF) operates a portfolio of interconnected digital and programmatic products centered on cultural landscape education and advocacy. The core offerings include the What's Out There Database (a searchable catalog of 2,800+ cultural landscape sites with 14,000+ images), the Pioneers of American Landscape Design database (featuring 1,400+ professional profiles), the Landslide Program (annual thematic reports on at-risk landscapes), City and Regional Guides (24 geographic/thematic guides including 6 NPS collaborations), and the biennial Oberlander Prize ($100,000 award). TCLF also produces events including conferences, lectures, tours, and exhibitions, and maintains the award-winning Pioneers Oral History Project. The organization functions as a 501(c)(3) nonprofit foundation established in 1998.

Differentiator

Problem solved

Functional benefit

Products and services

• What's Out There Database

Quantifiable outcome

• Over 2,800 cultural landscape sites documented in database
• +3 more outcomes

Segments1 record

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Scale indicators6 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• National Trust for Historic Preservation: The largest US nonprofit focused on historic preservation, operating a similar advocacy, education, and stewardship model. Directly comparable as a cultural heritage nonprofit that combines awareness campaigns, threatened-site listings, and member-supported programming.
• Landscape Architecture Foundation: A 501(c)(3) nonprofit focused on landscape architecture research, scholarships, and leadership, overlapping with TCLF's Pioneers, oral history, and education programming in the same professional discipline.
• Garden Conservancy: A national nonprofit dedicated to preserving exceptional American gardens, with a comparable mix of advocacy, documentation, events, and tours. Shares TCLF's designed-landscape focus and at-risk site stewardship.
• Cultural Heritage Foundation: A nonprofit advocating for threatened cultural and historic sites through public awareness and preservation grants, closely aligned with TCLF's at-risk landscape advocacy model.
• Docomomo US: A US chapter of an international nonprofit dedicated to documenting and conserving modern architecture and landscapes. Comparable niche advocacy nonprofit with awareness campaigns, programs, and educational outreach.

Broad incumbents

• American Society of Landscape Architects (ASLA): The primary US professional society for landscape architects, hosting annual meetings and excursions with TCLF. While a membership association rather than a heritage nonprofit, it operates in the same professional community and audience.
• World Monuments Fund: An international cultural heritage nonprofit that publishes a Watch List of at-risk sites and funds preservation, mirroring TCLF's Landslide at-risk model but with global scope and significantly larger resources.
• National Park Service: The federal agency that manages US cultural and natural heritage sites, including six TCLF city/regional guides developed in collaboration. Functions as both a partner and an institutional incumbent in the same cultural landscape domain.
• Aga Khan Trust for Culture: An international foundation that funds cultural heritage preservation, landscape rehabilitation, and awards in the Islamic world. A comparable philanthropic model with broader geographic and disciplinary scope than TCLF.

Regional players

• Preservation Alliance of Greater Philadelphia: A regional preservation advocacy organization with comparable programming (advocacy, tours, guides). Similar mission scope but focused on a single metro region rather than the national landscape focus.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• Xx.com/tclfdotorg
• Facebookfacebook.com/TheCulturalLandscapeFoundation
• LinkedInlinkedin.com/company/the-cultural-landscape-foundation

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about The Cultural Landscape Foundation