In the middle of the university campus of Lisbon, a huge stone always intrigued me. What would look inside this monolithic object? cold and dark probably to take care of historical documents. Although, time would go on without ever having planned a visit it, entering through the T letter that welcomes us. It was the OHL2025 that this discovery was made, followed by human centred schools, delicate refurbishments or, in opposition, revamping version on housing projects.