Architectural historians are professionals who study the history and development of buildings and structures. They analyze architectural styles, materials, and techniques used throughout different periods and cultures. Their work often involves researching historical documents, visiting sites, and documenting architectural features to understand how they reflect societal values and technological advancements. These historians may also contribute to the preservation of historic buildings by providing insights into their significance. They often collaborate with architects, urban planners, and preservationists to ensure that important structures, such as those designed by Frank Lloyd Wright or Le Corbusier, are maintained for future generations.