international policies and intervention trajectories. In this sense, important scientific evidence
emerged in the latest Evaluation Report of the Intergovernmental Panel on Climate Change (AR6
SYR 2023) where it was seen how cities and urban areas offer significant opportunities for
reducing emissions through a necessary decrease in energy consumption in the building sector
(IPCC, 2022). It becomes clear that the development of adaptive manipulation processes of cities
can contribute to increasing the resilience to climate change of the entire urban apparatus, in
line with goals 7 (Affordable and Clean Energy), 11 (Sustainable Cities and Communities) and
12 (Responsible Consumption and Production) of the Sustainable Development Goals (SDGs) of
Agenda 2030. It is therefore essential to consider the impacts that these climate hazards have
on cities, their cultural heritage and, above all, on the tangible and intangible entity that composes
it, which refers, in this contribution, to the public spaces of historic centres in the Mediterranean
area.
The intervention strategies focus on experimenting with climate adaptation actions for public
spaces in vulnerable neighbourhoods, increasing the endowment of greenery, soil permeability,
and social spaces to improve comfort and functionality through the adoption of adaptive, smart,
and technologically advanced devices. These experiments, through user-driven approaches,
result in community actions that promote public-private partnerships, including the integration of
cultural heritage into future design scenarios. (European Union, 2022).
In this context, the following contribution aims to analyse the relationship between climate-
change-related hazards and extreme events and the public spaces of historic centres in the
Mediterranean area. The aim of the research is to identify, within the European landscape, a
comprehensive picture of participatory, adaptive, responsive, technologically efficient, and nature-
based solutions implemented in innovative devices capable of increasing the resilience of public
spaces in historic centres to the upheavals linked to these changes.
1.1. The Effects of Climate Change on Historic Centres in the Mediterranean
Area
The effects of climate change represent one of the most important global challenges, which are
addressed through the adoption of adaptation strategies to mitigate its most extreme impacts
on cities. It is precisely the Mediterranean area that is considered (according to IPCC, ARC.6; IPCC
ARC.5; European Environment Agency, 2012) a “hot spot” region: an area identified as vulnerable
to climate change, with urban areas particularly exposed to its effects.
Among the various causes of climate risk related to man-made climate hazards, Climate
Adaptation Plans also report increased rainfall events with more intense, frequent rainfall and
higher temperatures, which threaten the integrity of historic centres and their public spaces in
both their material and immaterial forms. The criticalities related to these hazards are countless;
for example, the increase in extreme rainfall events and temperatures, along with the alternation
of soil wetting and drying, increases the risk of soil subsidence, while intense and frequent rainfall
can cause harmful flooding with direct effects on historical settlements. According to studies
carried out in relation to 2100, in the Mediterranean hot spot, the effects of high temperatures
would pose a significant risk of material degradation of the elements that make up the cultural
heritage considered. The same scenario suggests an additional risk associated with intense,
sudden rainfall and extreme pluvial or fluvial flooding in areas with limited drainage systems
(Kapsomenakis & Douvis et al., 2022). In this context, the processes of adaptation and mitigation
to climate change, accompanied by sustainable management of environmental issues, become
key challenges for all European cities (Lafortezza & Sanesi, 2018) and, to an even greater extent,
for all those residing in the Mediterranean area. For this reason, this analysis suggests that it is
fundamental to adopt adaptation strategies for Cultural Heritage and, more specifically, for public
spaces in historic centres.
In line with the latest reports of the European Commission (European Commission, Directorate-
General for Education, Youth, Sport and Culture, Strengthening Cultural Heritage resilience for
climate change: Where the European Green Deal meets Cultural Heritage, Publications Office
of the European Union, 2022), the role of historic centres becomes central, in relation to how
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