An AR mobile app (i.e. CirculAR) has been developed focusing on state-of-the-art localization technology, aiming to address bottlenecks that previous efforts faced, such as large-scale 3D artefacts representation utilizing low energy and power from smartphone devices and perform offline. 3D geometry-based modelling was used for the design of the 3D artefacts representing the buildings located in the ruins of two archeological sites and one museum. More precisely, CirculAR aspires to support the visualization of 3D large scale content, including information (text, audio, and video) in an accessible and inclusive manner; to use localization technology to reposition the 3D artifacts at their original position as accurately and as stable as possible; to seamlessly localize the 3D artefacts at field conditions with varying lighting, textures, possible absence of internet connection; to perform at common smartphone devices that have low performance in terms of energy and power.