This dissertation reflects on the governance of 20th-century architectural and urban heritage through a comparative study of Milan (Italy) and Porto Alegre (Brazil). It investigates how historical trajectories, legal instruments, planning practices, and public perception have shaped the recognition, protection, and transformation of modern heritage in cities marked by intense processes of modernization. Instead of treating modern architecture as a stylistic or chronological category, the research approaches it as a governance condition embedded within growth-oriented urban contexts. The comparison is developed through a reconstruction of heritage legislation, urban planning frameworks, and public discourse across the 20th century, considering the two cities' trajectories as parallel tracks shaped by different institutional cultures yet exposed to similar redevelopment pressures. This approach allows the study to identify shared structural tensions in the governance of modern heritage, beyond national or legal specificities. Public perception is addressed as a mediating layer between institutional frameworks and preservation outcomes. Through the analysis of media narratives and urban imaginaries, the study shows how heritage recognition depends on symbolic framing and narrative legitimacy as much as on formal protection. The research argues that the vulnerability of 20th-century heritage stems less from its recency than from misalignments between governance tools, temporal interpretations of modernity, and collective meaning-making.
Questa tesi riflette sulla governance del patrimonio architettonico e urbano del XX secolo attraverso uno studio comparativo tra Milano (Italia) e Porto Alegre (Brasile). Esamina come le traiettorie storiche, gli strumenti giuridici, le pratiche di pianificazione e la percezione pubblica abbiano plasmato il riconoscimento, la protezione e la trasformazione del patrimonio moderno in città caratterizzate da intensi processi di modernizzazione. Anziché trattare l'architettura moderna come una categoria stilistica o cronologica, la ricerca la affronta come una condizione di governance inserita in contesti urbani orientati alla crescita. Il confronto viene sviluppato attraverso una ricostruzione della legislazione sul patrimonio culturale, dei quadri di pianificazione urbana e del dibattito pubblico nel corso del XX secolo, considerando le traiettorie delle due città come percorsi paralleli plasmati da culture istituzionali diverse ma esposti a pressioni di riqualificazione simili. Questo approccio consente allo studio di identificare tensioni strutturali condivise nella governance del patrimonio culturale moderno, al di là delle specificità nazionali o giuridiche. La percezione pubblica è affrontata come uno strato mediatore tra i quadri istituzionali e i risultati della conservazione. Attraverso l'analisi delle narrazioni dei media e degli immaginari urbani, la tesi mostra come il riconoscimento del patrimonio dipenda tanto dall'inquadramento simbolico e dalla legittimità narrativa quanto dalla protezione formale. La ricerca sostiene che la vulnerabilità del patrimonio del XX secolo deriva meno dalla sua recente origine che dal disallineamento tra gli strumenti di governance, le interpretazioni temporali della modernità e la costruzione collettiva di significato.
Heritage of the modern in Milan and Porto Alegre: a comparative study, between governance and perception
Albrecht Silveira, Milena
2024/2025
Abstract
This dissertation reflects on the governance of 20th-century architectural and urban heritage through a comparative study of Milan (Italy) and Porto Alegre (Brazil). It investigates how historical trajectories, legal instruments, planning practices, and public perception have shaped the recognition, protection, and transformation of modern heritage in cities marked by intense processes of modernization. Instead of treating modern architecture as a stylistic or chronological category, the research approaches it as a governance condition embedded within growth-oriented urban contexts. The comparison is developed through a reconstruction of heritage legislation, urban planning frameworks, and public discourse across the 20th century, considering the two cities' trajectories as parallel tracks shaped by different institutional cultures yet exposed to similar redevelopment pressures. This approach allows the study to identify shared structural tensions in the governance of modern heritage, beyond national or legal specificities. Public perception is addressed as a mediating layer between institutional frameworks and preservation outcomes. Through the analysis of media narratives and urban imaginaries, the study shows how heritage recognition depends on symbolic framing and narrative legitimacy as much as on formal protection. The research argues that the vulnerability of 20th-century heritage stems less from its recency than from misalignments between governance tools, temporal interpretations of modernity, and collective meaning-making.| File | Dimensione | Formato | |
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https://hdl.handle.net/10589/251992