Light and nature interventions for the sustainability of heritage buildings

Abstract

Sustainability has taken center stage on the global agenda in the face of rising pollution levels that threaten both people and the ecosystems that support our daily lives. In the construction sector, this challenge has driven the development of architecture capable of reducing energy consumption through more efficient systems and integrating vegetation to lower the carbon footprint and improve the environmental conditions of inhabited spaces. Although often associated with contemporary architecture, sustainability can also be incorporated into heritage buildings without compromising their historical value. This article examines two fundamental strategies for achieving this: the responsible use of electricity and the integration of green spaces as part of the design and maintenance of these buildings. Energy is no longer conceived solely as a technical installation but is analyzed as a resource that, when applied efficiently, contributes to both savings and user comfort. Complementarily, the inclusion of vegetation is presented as an effective tool for improving air quality, reducing urban pollution, and promoting the psychological well-being of those who live in or visit these spaces. Heritage conservation should not be limited to the aesthetic treatment of facades or changes of use that ignore their historical essence. Integrating sustainable criteria allows these buildings to respond to the planet's current needs while strengthening their cultural relevance. In this sense, sustainability becomes a way to revalue heritage, transforming it into a living example of identity, memory, and environmental responsibility.