Developed as a public online resource by the Getty Institute, the Art and Architecture Thesaurus is a structured vocabulary containing 125,000 terms and other information that may be used to describe art, architecture, decorative arts, material culture, and archival materials. Each record within the Thesaurus is returned as a concept, which in turn, is linked to various terms, related concepts, sources for the data, and notes. For example, if a user types in the term "gargoyle," all of this valuable information is returned, including a chart that notes the terms hierarchical position within the Thesaurus. An online help feature will assist first-time visitors get better acquainted with the system, and a FAQ section provides answers to a number of common queries. Finally, users can provide feedback to the editors via an online form. [KMG]