ISTANBUL The Culture and Tourism Ministry has launched legal action against 106 properties along the Bosphorus after detecting unauthorized construction activities, including sea-facing expansions, unauthorized floor additions and facade renovations. Reports of illegal developments in the Beşiktaş district — specifically in the Bebek, Arnavutköy, Kuruçeşme and Ortaköy neighborhoods — prompted an investigation by the ministry’s regional directorate for the protection of cultural heritage. The