The Scuola Grande di San Marco is one of the most outstanding Renaissance buildings in Venice. Destroyed by fire in 1485, the Scuola was reconstructed between 1487 and 1495 by Pietro Lombardi (and sons), together with Giovanni Buora and Mauro Codussi. The façade is considered one of the finest and most original exteriors of Venetian buildings and in particular features refined sculptural and painted decorations and a remarkable pictorial effect created by the extensive use of polychrome marbles and the false perspective view between the pilasters of the lower order. Most of the stone materials (Istrian and Verona red limestones, nero di Roveré, pavonazzetto toscano, Carrara marble and various reused antique marbles) present evident decay phenomena such as scaling, exfoliation, powdering, fissuring, salt efflorescence, black crusts, and artificial patinas of various kinds. The present study reports the results of petrographic and chemical laboratory analyses carried out in preparation for the conservation treatment of the building, in order to characterize the main micro- and macro-morphologies of decay and to identify the causes and mechanisms of deterioration as well as the nature and application technique of the polychromy, gilding, and patinas present on parts of the monumental Renaissance façade

The preservation of Europe’s stone-built heritage is crucial for safeguarding our cultural legacy. This study investigates twelve distinct stones used in historical monuments across Italy, Spain, Greece, and Norway, including marbles (Carrara and Macael), limestones (Botticino, Red Verona, Costozza, Istrian, Sfouggaria, Santa Pudia), a carbonate-dominated sandstone (Lartios), volcanic rocks (Euganean trachyte and Tønsberg latite), and an intrusive igneous rock (Tønsbergite). Through comprehensive analysis of mineralogical composition, porosity, water interactions, and accelerated ageing tests, this research establishes a framework for assessing these materials susceptibility to decay mechanisms. The results demonstrate significant variability in durability and decay response among the stone types, primarily determined by pore abundance and distribution. This study enhances the understanding of stone materials behaviour under stressed conditions, offering valuable insights for mitigating future decay processes and protecting European cultural heritage. The stones examined were chosen for their significant presence at the four pilot sites of the European Hyperion project: Venice (Italy), Granada (Spain), Rhodes (Greece), and Tønsberg (Norway). Graphic abstract

Barium hydroxide was one of the most widely used inorganic materials to consolidate calcareous stones during the 19th and 20th. The consolidation process occurs through a carbonation reaction. Several researchers studied the consolidation mechanism; however, the results are sometimes in conflict. More experimental work using modern analytical techniques and a multi-analytical approach is necessary to shed light on the mechanisms involved. This research aims to validate the chemical composition of the developed secondary products and to evaluate the treatment’s effectiveness over time. Carrara marble and Vicenza white limestone were treated and subjected to natural, artificial, and biological weathering. Furthermore, only a few microsamples were collected from Venetian historical artifacts treated in the 1960s and 1970s. Microscopic observations, sponge tests, FTIR, SEM-EDX, and microbiological analyses investigated the stability of the treatment over time and ascertained the chemical composition of the acicular crystals developed from the carbonation reaction of barium hydroxide. The results prompted a number of considerations useful for future restorations and for developing innovative compounds for consolidation interventions.

Cultural heritage assets face significant threats from climate change and land subsidence, leading to extensive social, economic, and environmental losses, and damage to artistic and monumental heritage in Italian coastal cities. In particular, addressing these challenges in the Venetian context necessitates the development of an adaptation plan for the lagoon area and the identification of targeted intervention strategies to preserve cultural and territorial heritage. To address these objectives, a systematic study was conducted to investigate the deterioration patterns exhibited by the most representative lithologies used in Venetian buildings. Thirty samples of five carbonate stone varieties subjected to natural aging were monitored in six different areas of Venice’s historic center and on Torcello Island, selected based on altimetry relative to tidal zero and exposure to environmental forces. An integrated multi-analytical approach was employed to identify and map macro- and micro-morphologies of stone surfaces related to chemical weathering and physical decay. Stones underwent evaluation during nine monitoring periods using various tests (ultrasound P-wave velocity and colorimetric measures) and analyses (µX-Ray Fluorescence, X-ray powder diffraction, stereomicroscope observations, and recognition of biological patinas). Data processing aimed to elucidate how microclimate and intrinsic stone features influence the occurrence and progression of deterioration phenomena. From the experimental findings, a Stone Deterioration Index and Intervention Procedures (SDIi) were proposed to estimate deterioration rates and assess the need for targeted intervention through conservative actions.

Museums are cultural spaces that should promote accessibility and inclusion for all. However, accessibility is often interpreted as removing physical barriers, overlooking less visible obstacles—such as cognitive, sensory, and communicative challenges—that can profoundly shape the museum experience for people with intellectual disabilities. This paper presents an ethnographic case study conducted in the Veneto region of Italy, in collaboration with a group of individuals with Down Syndrome (DS), aiming to explore their lived experiences of a museum visit. Drawing on participant observation and in-depth interviews, the study examines how visitors with DS engage with the museum environment on behavioural and sensory levels. Findings reveal the impact of environmental stimuli, difficulties in navigating abstract or densely layered visual content, and the importance of embodied interaction with objects and spatial cues. Positive experiences emerged from relational engagement, guided facilitation, and the use of multi-sensory supports. The study underscores the need for museums to move beyond compensatory or charity-based models of accessibility, and instead adopt inclusive design principles that value neurodiversity and participatory co-creation. In doing so, this research contributes to the emerging discourse on how museums can become safe spaces for learning, dialogue, and self-expression for people with intellectual disabilities.