The American Planning Association's professional institute, providing recognized leadership nationwide in the certification of professional planners, ethics, professional development, planning education, and the standards of planning practice.

Nonprofit public interest and research organization committed to urban, suburban, regional and rural planning. PA advances the art and science of planning and to foster the activity of planning, physical, economic, and social, at the local, regional, state, and national levels.

A trade association which represents more than 150 public port authorities in the United States, Canada, the Caribbean and Latin America.

An organization devoted to studying and providing statistics on all aspects of public transportation.

An international educational and professional association of public agencies, private sector companies, and individuals dedicated to providing high quality public works goods and services.

An organization directed towards the protection of the natural and built environment, arms reduction, and socially responsible development.

A consortium of university-based programs offering credentials in urban and regional planning.

Nonprofit, membership organization serving the needs and interests of Metropolitan Planning Organizations (MPOs).

Promotes excellence in the emerging professional discipline of pedestrian and bicycle transportation.

National voice for planners and planning in Canada. Web site features resources on planning, education, careers, and conferences.

Founded in 1969, is a professional association for community development practitioners and citizen leaders around the world.

Organization promoting walkable, neighborhood-based development as an alternative to sprawl.

An international, interdisciplinary organization founded in 1968 to advance and disseminate environmental design research, thereby improving understanding of the interrelationships between people, their built and natural surroundings, and helping to create environments responsive to human needs.

Professional and educational organization for chief appointed managers, administrators, and assistants in cities, towns, counties, and regional entities throughout the world.

An international non-governmental organization of professionals, dedicated to the conservation of the world's historic monuments and sites.

A world leader and champion for vital and livable urban centers.

Tthe largest membership organization serving economic developers around the world.

A global association of professional planners founded in 1965 with a vision of bringing together recognised and highly qualified planners in an international network. Members from over 70 countries, a non-governmental organisation, recognised by the United Nations and the Council of Europe and with a consultative status with UNESCO.

Provides training, information and representation for regional development organizations in small metropolitan and rural America.

a federation of more than 800 state and local builders associations.

The leading housing and community development advocate for the provision of adequate and affordable housing and strong, viable communities for all Americans-particularly those with low- and moderate-incomes.

Brings together local environmental officials to network and share information on innovative environmental practices, conduct environmental policy projects, promote environmental training and education, and communicate the view of local environmental officials on national environmental issues.

The preeminent alliance for fostering regional cooperation and building regional communities.

Organization devoted to strengthen the effectiveness of town and township government.

A 109-year-old non-profit, non-partisan organization dedicated to strengthening citizen democracy by transforming democratic institutions.

A national nonprofit organization comprised of more than 550 local governments across the country that administer federally-supported community and economic development, housing and human service programs, including programs of the U.S. Department of Housing and Urban Development (HUD), Community Development Block Grant (CDBG), and the HOME Investment Partnerships (HOME) programs.

The oldest and largest national organization representing municipal governments throughout the United States. Its mission is to strengthen and promote cities as centers of opportunity, leadership, and governance.

For over 25 years, PN has been the voice of progressive planning, publishing a newsletter, holding annual conferences, and organizing local activities in cities throughout North America.

Promotes a return of human values to architecture, the building arts, urban design, and regeneration.

A nonprofit corporation specializing in the planning, design, and management of public spaces.

Represents the professional administrators of approximately 1,900 housing authorities from all over the United States.

Nationwide coalition promoting a better way to grow: one that protects farmland and open space, revitalizes neighborhoods, keeps housing affordable, and provides more transportation choices.

An organization that encourages development that is environmentally, fiscally, and economically smart and helps create national, regional, and local coalitions to support smart growth.

The international professional organization for urban scholars, researchers, and public service providers.

A non-profit professional and educational association that promotes the effective and ethical use of spatial information and information technologies for the understanding and management of urban and regional systems.

A nonprofit research and education organization founded in 1936 that now has more than 33,000 members in 95 countries worldwide. Representing the entire spectrum of land use and real estate development disciplines, the mission of the Urban Land Institute is to provide leadership in the responsible use of land and in creating and sustaining thriving communities worldwide.

Archiseek.com is an ongoing project of Paul Clerkin. The site is aimed at both the general public and the architecture community. "I want to encourage the average person to enter into the architectural debate, not to be afraid of architecture-speak and terminology. Your view is as valid as the head of any architecture body." Consists largely of forums and information on buildings and architecture.

An online community for architects, planners, urban designers, interior designers, landscape architects, and scholars, with a special focus on the Islamic world. Includes a digital library with access to important journal articles, information on careers and course syllabi.

Landscape architecture news digest

A database of articles from architectural magazines. Subscription is required for content aside from the "free" area: articles from the years 1982-1988.

A directory of collected web resources.

INFOMINE is a virtual library of Internet resources relevant to faculty, students, and research staff at the university level. It contains useful Internet resources such as databases, electronic journals, electronic books, bulletin boards, mailing lists, online library card catalogs, articles, directories of researchers, and many other types of information.

Directory of web resources for architecture and related fields.

From the National Park Service Cultural Resources a wealth of information on history, cultural landscapes, special exhibits, databases for historical research and more.

Part of the RIBA, NBS provides a variety of resources for architects.

Sapling.info is the Architecture, Planning & Landscape Information Gateway - a global gateway for information and a forum for its exchange, centred around more than 1,100 reviewed links to architecture, planning and landscape-related websites.

Search over 2 million records, with 210,500 images, video and sound files from dozens of Smithsonian museums, archives, and libraries.

Italian website with information on works of architecture throughout the world.