The Marburg Index serves as a comprehensive reference and guide to art and architecture within Germany. Since its inception in 1977, it has meticulously cataloged photographic materials, organizing them by the physical location of the artworks. This organization extends to classifying photographs of specific sites by type: ecclesiastical buildings, secular buildings, and collections.

The Marburg Index is recognized as a foundational reference work for art and architecture in Germany, valued for its systematic organization and extensive cataloging. Its long history, beginning in 1977, speaks to its enduring utility and the depth of its archival scope. The incorporation of diverse photographic collections from various institutions underscores its comprehensive nature and its role in preserving and disseminating knowledge about German art and architectural heritage.