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.