Hundreds of Istanbul residents have raised complaints this year about a growing phenomenon that urban researchers are calling duplicate image replacement — the systematic substitution of authentic, locally sourced photographs on digital platforms with generic or mismatched stock images, erasing visual records of specific neighbourhoods, streets, and cultural sites. The problem has surfaced across mapping services, heritage databases, and tourism portals, and the people most affected are not tech workers or archivists. They are shopkeepers, longtime tenants, and community organisers who watch their districts disappear from the digital record.
The issue carries particular weight in Istanbul right now. The city is simultaneously managing an accelerating urban renewal programme following the 2023 Kahramanmaraş earthquakes, a contested development agenda along the Bosphorus shoreline, and a booming tourism sector that drew more than 20 million visitors in 2024, according to figures published by the Istanbul Metropolitan Municipality. Each of these pressures has sharpened the value — and the vulnerability — of authentic visual documentation. When an image of a specific alley in Balat gets replaced by a photograph taken somewhere in Eastern Europe, local residents lose more than a picture. They lose evidence.
Neighbourhoods Disappearing from the Screen
In Balat, the historic district on the Golden Horn whose Ottoman-era timber houses have made it a subject of intense preservation debate, members of the Fener-Balat Neighbourhood Association began documenting the replacements in March 2026. The association, which operates out of a community hall on Vodina Caddesi, logged more than 40 instances on a single major mapping platform where photographs submitted by local contributors had been swapped out for images showing interiors or streetscapes with no connection to the area. Vintage tile patterns specific to Sephardic Jewish architecture in the neighbourhood were replaced, in several cases, with images of anonymous Mediterranean courtyards.
Across the Bosphorus in Kadıköy, vendors in and around the Kadıköy Bazaar reported similar experiences. Stallholders who had personally uploaded images of their shops to business listing platforms found the photographs had been replaced — sometimes with images of entirely different product categories. A spice seller whose stall sits just off Moda Caddesi described the replacement as a kind of bureaucratic erasure, one that followed a rent increase and a rezoning dispute in the same six-month window. No formal complaint mechanism existed, he said, that could resolve the swap in fewer than three weeks.
What the Evidence Shows — and What It Doesn't
Quantifying the full scale is difficult. The Istanbul branch of the Chamber of Architects, which has been monitoring digital heritage documentation since the municipality launched its Kentsel Dönüşüm urban transformation programme, noted in a May 2026 internal memo — circulated to member architects and later reported by the Turkish architecture journal Mimarlık — that image integrity on third-party platforms is not subject to any municipal oversight mechanism. That regulatory gap, the memo argued, creates conditions under which automated content moderation systems can override locally submitted photographs without any human review.
Platform-level data is not publicly available for Turkey specifically. Globally, one study published in the journal Big Data & Society in late 2024 found that automated deduplication algorithms incorrectly flagged and replaced authentic images at a rate of roughly 3.7 percent across urban heritage categories — a figure that, applied even cautiously to a city with Istanbul's volume of listed locations, would represent thousands of individual replacements per year.
Community members in both Balat and Kadıköy say their immediate priority is documentation. The Fener-Balat Neighbourhood Association is compiling a neighbourhood-level image archive on a self-hosted server at the Istanbul Bilgi University digital humanities lab on Kazım Karabekir Caddesi, aiming to have a publicly accessible repository live before the end of September 2026. Residents who discover replaced images on any platform are being advised to screenshot the original submission timestamp if it remains visible, file a content dispute through the platform's official reporting channel, and simultaneously submit the original photograph to the community archive. The goal, participants say, is to make replacement harder to complete invisibly — and easier to reverse.