Alliance for Historic Landscape Preservation
The purpose of the website is to distribute general information about the Alliance (including membership information) and to educate public about historic landscapes.

American Academy in Rome
The American Academy in Rome is one of the leading American overseas centers for independent study and advanced research in the fine arts and the humanities.

American Institute for Conservation of Historic and Artistic Works
The American Institute for Conservation of Historic and Artistic Works (AIC) is the national membership organization of conservation professionals dedicated to preserving the art and historic artifacts of our cultural heritage for future generations.

American Institute of Architects
Premier organization for building and design industry professionals.

Italian association for architecture, art and urban restoration

Canadian Heritage Information Network (CHIN)
The Canadian Heritage Information Network site provides information about CHIN's subscription services, which include access to extensive data on collections of Canadian museums and reference materials. The reference information includes eleven databases, including those that make up the Conservation Information Network, a part of which is ICCROM's library holdings.

Center for Historic Preservation, Middle Tennessee State University
The Center for Historic Preservation (CHP) at Middle Tennessee State University (MTSU) is one of sixteen Centers of Excellence based at Tennessee Board of Regents schools. Created in 1984, the CHP is a research and public service institution committed to the preservation, protection, enhancement, and promotion of our historic environment.

Columbia University Historic Preservation Alumni
The oldest and  largest preservation alumni association in the United States, which has helped preserve many of the country's most important monuments and sites.  PA organizes regular social, educational, and volunteer activities, and strives to support the mission of the Historic Preservation program at Columbia University.

Construction History Society of America
The Construction History Society of America (CHSA) is dedicated to the study of the history and evolution of all aspects of the built environment—its creation, maintenance and management. It is a forum for scholars and professionals in the field to share, meet and exchange ideas and research.

Conservation OnLine (CoOL)
CoOL, supported by the Foundation for the American Institute of Conservation of Historic and Artistic Works (FAIC), is a full text database devoted to information about the conservation of library, archival, and museum materials. The site includes reports, conservation topics, guides to resources, and links to many other conservation-related web sites.

CRM Journal
Cultural Resource Management, the National Park Services' journal.

International working party for documentation and conservation of buildings, sites and neighborhoods of the Modern Movement.

Historic Bridge Foundation
Serve as a clearinghouse for information on the preservation of endangered bridges, provide assistance to list bridges in National Register of Historic Places or to complete grant applications for preservation projects, consult with public officials to devise reasonable alternatives to the demolition of historic bridges, develop educational programs to promote awareness of historic bridges.

International Centre for the Study of the Preservation and the Restoration of Cultural Property (ICCROM)
ICCROM is an intergovernmental organization working in service to its Member States to promote the conservation of all forms of cultural heritage, in every region of the world. It operates in the spirit of the 2001 UNESCO Universal Declaration on Cultural Diversity, which states that “Respect for the diversity of cultures, tolerance, dialogue and cooperation, in a climate of mutual trust and understanding are among the best guarantees of international peace and security.” Those working on the front lines of heritage preservation, including scientists, conservators, museum curators, site managers, archivists, researchers and archaeologists rely on ICCROM for its world-class initiatives in conservation training, information, research, cooperation and advocacy.

International Council on Monuments and Sites (ICOMOS)
Operated by ICOMOS Canada on behalf of ICOMOS, this web site contains ICOMOS charters, information on committee and World Heritage List activities, and numerous links to other WWW sites relating to the international protection of cultural property. The aim of the ICOMOS site is to make available to a global community information on cultural heritage, emphasizing standards and techniques for their preservation, restoration, and management.

International Council on Museums (ICOM)
ICOM is devoted to the promotion and development of museums and the museum profession. The ICOM web site provides access to the ICOM Document Repositories. Links can also be made to web sites maintained by a number of ICOM's committees.

International Preservation Studies Center " formerly Campbell Center for Historic Preservation Studies"
The International Preservation Studies Center (IPSC) is one of the top international destinations for practical, hands-on training in collections care, historic preservation, and conservation refresher. With over 35 years of experience, the Center has positioned itself as a leader in the field of preservation, offering over 75 courses to meet the training needs of cultural heritage professionals around the world. Our instructors are working professionals in the field who provide our participants with their expert instruction in best practices.

National Center for Preservation Technology and Training (NCPTT)
The NCPTT is a National Park Service center whose mission is to promote technology and training for historic preservation professionals and conservators.

National Park Service/Cultural Resources (NPS)
The National Park Service is charged with caring for and maintaining America's cultural and natural resources.

National Preservation Institute

National Trust for Historic Preservation
The National Trust is a nonprofit organization with more than 260,000 members. As the leader of the national preservation movement, the National Trust is committed to saving America's diverse historic environments and to preserving and revitalizing the livability of communities nationwide. It has seven regional offices, owns 18 historic sites and works with thousands of community groups in all 50 states.

New York Landmarks Conservancy
The Landmarks Conservancy is a nationally recognized organization which helps owners of older buildings by providing grants, low-interest loans, hands-on consulting services, workshops, and publications.

Partners for Sacred Places
Focuses on preservation of historic religious properties.

Preservation Trades Network, Inc.
The Preservation Trades Network, Inc. is a non-profit organization that brings together the building trades in the field of historic preservation, restoration and conservation of heritage buildings, architecture, engineering and historic structures.

RESTORE is a not-for-profit educational corporation that offers a range of innovative educational programs and services related to the technology of building conservation. Since 1976, RESTORE has provided workshops and courses on the technology of architectural preservation to building industry professionals who are directly responsible for the preservation and maintenance of our architectural heritage. RESTORE offers workshops in masonry conservation and architectural conservation techniques.

Society for Industrial Archeology
The mission of the Society for Industrial Archeology (SIA) is to encourage the study, interpretation, and preservation of historically significant industrial sites, structures, artifacts, and technology. By providing a forum for the discussion and exchange of information, the Society advances an awareness and appreciation of the value of preserving our industrial heritage. 

Society for Commercial Archaeology
Focuses on preservation of roadside architecture.

Society of Architectural Historians (SAH)
SAH, which supports scholarly research on architectural history and promotes the preservation of significant monuments, provides the following at its site: chapter events; extensive links to related sites; membership information; and interesting "homepage projects," including dissertations underway, biographies of American architects, and a list of Historic Structure Reports, which is currently under development.

The Institute of Historic Building Conservation
The IHBC is the principal professional body for building conservation practitioners and historic environment specialists working in England, Northern Ireland, Scotland and Wales, with connections to the Republic of Ireland.

Theatre Historical Society of America
For more than 30 years, the Theatre Historical Society of America has been dedicated to documenting the rich heritage of historic theatres in the United States -- from early nickelodeons, small town and neighborhood theatres, to ornate movie palaces, drive-ins, 19th century opera houses, and even early multiplexes.

Traditional Building Magazine
They are indexed in 12 major product categories and divided into 75 subcategories.

World Monuments Fund
World Monuments Fund is a New York-based non-profit dedicated to preserving and protecting endangered works of historic art and architecture around the world. The World Monuments Watch, a program of World Monuments Fund, issues the List of 100 Most Endangered Sites every other year.