The art or science of planning and building structures. Sites and categories may include, but not limited to:

Academic Departments

Architectural Photographers

Architectural practices, companies and firms

Organizations, including trade associations, preservation societies, and special interest groups. Periods and Styles, including Googie and Prairie styles

The uniquely American roadside consisting of diners, drive-ins, motels, and Main Street USA, in addition to vernacular architecture

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Building types, such as lighthouses and skyscrapers.