3D  modeling  of  architectural  structures  for  monitoring,  conservation  and  restoration  alterations  in  heritage  sites  has  special challenges  for  data  acquisition  and  processing. METRICA S.A. provide complete and accurate as built survey data. Capturing extremely fast million of points with the use of latest laser scanning instruments we can deliver 2D CAD drawings, 3D models or Building Information Modeling (BIM) deliverables. The versatility of the method combined with our ability to handle complex environments enable us to be involved in a wide variety of applications.