Istanbul's civic memory has a storage problem. Across dozens of municipal departments, cultural foundations and tourism bodies, tens of thousands of duplicate images — identical or near-identical photographs catalogued under different file names, in different systems, sometimes with contradictory metadata — have piled up over roughly two decades of uncoordinated digitisation efforts. The problem did not arrive suddenly. It was built, layer by layer, through budget cycles, political transitions and the sheer pace of a city that never stopped photographing itself.
The issue matters now because the Istanbul Metropolitan Municipality, known by its Turkish acronym IBB, has been pushing since 2022 to consolidate its sprawling digital infrastructure under a unified platform. That consolidation effort, which IBB's digital services directorate has publicly described as part of its broader smart-city initiative, has forced archivists and IT staff to confront what years of siloed record-keeping actually produced. What they found, according to procurement documents reviewed by The Daily Istanbul, was a digital archive riddled with redundancy — the same image of Galata Bridge appearing under dozens of separate entries, or aerial shots of the Fatih district timestamped differently across three separate departmental servers.
How the Duplication Accumulated
The roots go back to the early 2000s, when Turkish municipalities began transitioning from physical to digital record-keeping without standardised protocols. Each department — urban planning, heritage conservation, tourism promotion — built its own database independently. The Istanbul Archaeological Museums, headquartered in Gülhane Park in Eminönü, ran a separate digitisation programme from the one operated by the İstanbul Kültür ve Sanat Vakfı (İKSV), the private cultural foundation based in Şişhane. Neither was coordinated with IBB's own photographic unit. By the time anyone tried to merge these streams, the duplication was structural.
The 2023 Kahramanmaraş earthquakes added urgency. Emergency response teams and urban planners needed rapid access to building-condition imagery across Istanbul's older districts — Balat, Zeyrek, Kuzguncuk — to assess seismic vulnerability. What they found instead were retrieval systems slowed by redundant files and inconsistent tagging. A single aerial photograph of a neighbourhood could exist in four formats, labelled under four different neighbourhood spellings, pulling up in search results as if they were four distinct assets. That practical failure, in a moment when speed mattered, shifted internal conversations about the archive problem from bureaucratic nuisance to operational risk.
Tourism pressures compounded it further. Istanbul received roughly 20.2 million foreign visitors in 2024, according to figures published by the Turkish Statistical Institute (TÜİK). The promotional machinery that services that volume — the Istanbul Convention and Visitors Bureau, travel agencies operating out of Sultanahmet and Beyoğlu — draws constantly on municipal and heritage image libraries. Duplicate files with conflicting rights metadata created licensing headaches, with some images flagged as restricted in one system and freely available in another.
The Cleanup Effort and What Comes Next
IBB launched a formal image-deduplication tender in late 2025, contracting a local technology firm to audit the central archive. The scope, as stated in the tender documentation, covered an estimated 1.4 million digital assets across four legacy systems. The work is expected to run through the third quarter of 2026. Archivists involved in the project have been tasked not only with removing duplicates but with building a unified taxonomy — a standardised naming and tagging system that will govern how new images enter the archive going forward.
The practical implications extend beyond civic housekeeping. Urban planners working on the contested Bosphorus waterfront development projects depend on accurate historical photographic records to satisfy heritage-protection reviews. Duplicate or misfiled images have, in at least some cases documented in internal IBB correspondence, delayed those reviews by weeks. Getting the archive right is, in that sense, also about getting future development decisions right.
For residents and researchers, the most immediate change will come through the IBB's public portal, kent.istanbul, where neighbourhood historical photographs are already accessible. Once deduplication is complete, the directorate has indicated the portal's search function will be rebuilt. Anyone trying to trace how Tarlabaşı looked before demolition, or document the pre-restoration state of a Beyoğlu façade, will be working with a leaner, more reliable set of records — assuming the project lands on schedule.