The paper presents further steps of study started by authors in recent years, as part of the widest international research collaboration, which focuses on shared life and regeneration of abandonment of rural settlements as strategies for the development of sustainable territories. This research aims to understand how the regeneration of ancient community buildings impacts on the sustainable development of the local context. To understand these effects, the research considered four traditional typologies of community buildings, from different cultures: Tulou (China), Cascina (Italy), Hacienda (Mexico), and Marae (New Zealand). Among the tens/hundreds of contemporary regeneration interventions, three contemporary projects per each of these typologies have been selected. To assess the territorial impact of the projects a new approach has been defined using Expert Interviews as the methodology, so as to be able to have an assessment directly by experts in the fields of regenerative projects and sustainable development. The Expert Interviews were held based on a questionnaire that assessed the effects of the projects. For the evaluation of the projects, two categories of indicators have been selected: (1) United Nations SDGs, (2) architectural regeneration indicators generated by the study “The Role of Cultural Heritage in Sustainable Development: Multidimensional Indicators as Decision-Making Tool”, by Francesca Nocca, published in Sustainability (2017, 9, 1882). The research outputs show how the urban-architectural regeneration of these historical typologies can be clearly associated with indications of sustainable development. The results also show that in all four cultures the regeneration of historic buildings provides many benefits to local communities by successfully mixing different income groups and the inclusion of marginalized or vulnerable groups.

Collaborative Online International Learning (COIL) has become an innovative pedagogical strategy that promotes the internationalization of curricula and the development of transversal competencies. In architecture, its implementation is particularly relevant because there is a growing need to train professionals capable of leading and collaborating in global and interdisciplinary contexts. However, evidence of COIL’s impact during the early stages of higher education in Latin America remains limited. This study analyzed the experience of 39 architecture students from the Universidad Nacional de San Agustín de Arequipa (Peru), who collaborated with peers from Mexico in a five-week COIL project focused on design methodologies for vulnerable populations. Using a mixed-methods approach, the study assessed students’ competencies in leadership, self-regulation in virtual learning, and emotional intelligence and teamwork through pre- and post-experience questionnaires complemented with open-ended questions. Findings indicate that although students’ self-perceptions of their competencies remained at medium-to-high levels overall, changes occurred differently among groups: students with initially low self-assessment scores showed improvements, whereas those with initially high scores tended to moderate their self-assessment. Qualitative analysis highlighted barriers such as limited communication, time zone differences, and unequal participation. Overall, the results suggest that the COIL experience not only supported the development of competencies but also fostered critical reflection and a more realistic self-assessment of students’ competencies in virtual and intercultural contexts.