The preservation of historical monuments requires techniques that maintain authenticity and sustainability. The use of compressed earth blocks (CEB) perfectly meets these requirements, as it combines, ecological principles and traditional techniques. This study investigates the suitability of CEB for heritage restoration, highlighting its environmental impact and its compatibility with ancient materials. Data were collected from case studies of restoration projects that used CEB combined with technical analyses of material properties. These data were processed by comparison with traditional restoration techniques and conventional materials. The findings demonstrate that when we compare the compressed earth blocks (CEB) (also referred to as soil blocks or adobe blocks) with other materials of traditional building, we find that CEB emit significantly less Carbone while maintaining the mechanical and thermal performance necessary for historical monuments. In addition, its harmony with ancient buildings maintains the originality and authenticity of the historical monuments. This study, hence, analyses the ability of CEB to facilitate the long-lasting restoration and also save the energy consumed in the site. Additionally, CEB represents an ecological alternative that is eco-friendly. The use of regional sources and material as well as the embodied energy of CEB allows for a more environmentally-friendly restoration. In conclusion, the CEB maintains a balance between respecting the local culture and sustainable development which makes it perfectly suitable for preserving and reviving the historical monuments.