Among other historical artifacts, architectural heritage is the most difficult to present in museums. There is a need for a high-tech visualization of cultural heritage since it is important to visualize, share and analyze data for stakeholders such as historians, archaeologists, architects and tourists. This study aims to represent architectural heritage in terms of photogrammetry and AR methods for the Parion Theater, Biga, Turkey, dates back to 1st-2nd century A. D. and has been under excavation since 2005. The study uses MULTIRAMA, a method previously developed by ARC Team (MIT) in 2013, which aims to represent the "unseen" to such users by visualising and documenting via an app. The method supports architectural heritage representation via the processes of, i) documentation, ii) data process and modeling, and iii) presentation. This holistic and low cost approach will focus on the problem of visualizing the digital architectural heritage, and led light to future projects of a historical visualization database throughout Turkey.