The advances in technology are evolving at a really fast pace in regards of the techniques we used to use in the past decades. Such advances have been even more radical in the fields of geomatics that have reached such perfectioning limits only imaginable if coming from great revolutions, both in the scientific and technological fields. The new technologies, that were only used in a concrete field of work in the past, are now being used in other fields of work that were once unthinkable. Science based in ofimatica has made this progress easier by making these processes, once slow and expensive, much easier at the same time it has improved their results’ precision. Thus obtaining an optimization and optimization that exponentially improved the topographic procedures and, along with it, of many other disciplines of the technologic and scientific side. All these improvements are being applied in the fields of topography, engineery, architecture and construction between many others. Technologies such as the 3D viewing of an object, thermographic cameras, along with all kinds of measurers, calculus programs, etc. that have spurred the worker's productivity along with the companies' itself, with the valuable add up of the improvement of the quality of human work. The Topography in concrete, this improvements, had made us go from chains, compasses, displacements and plumbs, to handling GPS's, 3D digital scanners and computer measurements along with the evolution of electronic devices. Thanks to the latter, such simple task as to get angles, is now way faster, more effective, and more precise than it was back in time. With the actual total stations a huge improvement has been made in the angular reading and distance reading, not forgetting the motorized point stakeout stations along with the robotized, that by using a search and following system for a prism allows the data collection without an operator handling the station. Without further ado to get even deeper inside the history of the evolution of the topographic measurement apparels, we cannot leave the development of the Global Positioning Systems without a mention. They have given us access to the realtime data collection with the Geographical Information Systems along with images captured from satellites giving way to new techniques in the remote sensing field. With everything said above, there is no doubt that we have greatly widened the old traditional limits that the measurement instruments and cartography itself once had. But, despite all these improvements and new technologies, along with the great changes in the applied methods used. The traditional concept of Topography still remains the same it was in Egiotian times. It is also curious how iside the same field it is still looked after a more "artisan" way of work, especially in the tasks of heritage architectural surveys, that would be needed for any project of subsidence, reform or cataloging, which is precisely the objective of this work. The objective of wich is the reconstruction of 3D model of the Roman ruins of La Llosa of Cambrils. Paper, pencil, and measuring tape are still considered useful field tools along with the photographic camera (to check the sketch). Photography and measuring tools converge in the field of photogrammetry with which we get the real magnitude represented in the photographic images allowing us to measure real distances over the graphical documentation obtained in the processing of the same. Photogrammetry has brought many advantages, especially by reducing the field work and by obtaining precise plans.