Prague Officials Split Over AI-Generated Historic Image Replacements

Prague's city conservation office is under pressure to clarify its policy on digitally substituted images after preservationists and urban planners found themselves at odds over a practice that has quietly spread through the capital's heritage documentation projects over the past 18 months. The core dispute: when a historical photograph or architectural survey image is damaged, lost, or unusable, should a digital reconstruction, effectively a duplicate generated to fill the gap, be permitted to stand in official records?

The question is not abstract. Prague holds one of the densest concentrations of listed heritage structures in central Europe, and the City Institute of Heritage Care, which operates under Prague City Hall on Mariánské náměstí, maintains tens of thousands of digitised archival images covering buildings from Malá Strana to Žižkov. As physical originals degrade and scanning campaigns turn up corrupted files, the temptation to replace damaged images with algorithmically reconstructed versions has grown alongside the technology enabling it.

What the Institutions Are Saying

The National Heritage Institute, headquartered on Valdštejnské náměstí in Prague 1, has not issued a formal public position on AI-generated replacement images in municipal archives as of July 2026. However, heritage professionals familiar with its internal guidelines describe a strong institutional preference for clearly labelling any reconstructed image as a derivative, not an original. The concern is straightforward: if a duplicate image enters an official record without a flag, it can migrate into planning applications, academic publications, and eventually legal proceedings, where its synthetic origin may never surface.

Prague 6 district council, which oversees a large share of the city's interwar and First Republic-era residential stock including the villa quarter around Baba estate, has been among the more vocal local administrations. District representatives have asked the city's central information technology department to audit digitisation projects completed since January 2024 and confirm whether any replacement images were inserted without metadata disclosure. That audit, according to public meeting minutes from the Prague 6 council session held in May 2026, was expected to be completed by the end of the third quarter of this year.

Urban planners working on the ongoing Smíchov City development near the former ČKD factory site have flagged the issue from a different angle entirely. When historical images of a site are used to justify or contest heritage protection status, the integrity of those images has direct legal consequences. A duplicated or reconstructed photograph presented as an original could, in principle, affect whether a building qualifies for protection under Czech Act No. 20/1987 on State Heritage Care, a law that has not been substantively amended on the question of digital documentation standards.

The Practical Stakes for City Records

The Prague Digital Archive, a joint project between the city library on Mariánské náměstí and the Municipal Museum, holds over 1.2 million digitised items, according to figures the project published in its 2024 annual report. Even a small percentage of compromised or mislabelled replacement images at that scale represents a significant documentation risk. Archivists involved in the project have publicly called, at a conference held at the Clam-Gallas Palace in March 2026, for a binding metadata standard that would require any AI-generated or algorithmically reconstructed image to carry a permanent, machine-readable disclosure tag.

That proposal has the backing of the Czech Chamber of Architects, based in Prague 1, which circulated a position paper to its membership in April 2026 recommending that all heritage image replacements be treated as interpretive reconstructions, subject to the same disclosure rules as architectural drawings. The chamber stopped short of calling for a moratorium on the practice but urged municipal bodies to adopt the metadata standard before the end of 2026.

For residents and neighbourhood groups watching development pressures mount across districts like Holešovice and Nusle, the stakes feel immediate. A photograph of a facade that never quite existed, slipping into a planning file, is not a hypothetical, it is the kind of evidentiary problem that litigation is built from. Prague City Hall has yet to set a public hearing date on the matter, but with the Prague 6 audit due in the autumn and the chamber's deadline looming, the window for the city to get ahead of the controversy is narrowing fast.