The National Gallery is a 17,500 m² art museum, located in Athens, and was certified with LEED v3 for Building Design & Construction at Silver level in 2021.

Achieving LEED Silver certification, the National Gallery exemplifies the integration of sustainability in cultural institutions. This extensive major renovation project incorporates advanced strategies for energy efficiency, sustainable site development, and water conservation, ensuring that the museum operates with minimal environmental impact. Through sustainability consulting and energy modeling, the project has optimized resource use while maintaining the integrity and functionality of the museum spaces. This certification highlights the importance of sustainable practices in the construction and operation of cultural facilities promoting environmental stewardship within the arts community.