The topic of this graduation thesis is the buildings, infrastructure and construction of Tilurium. This ancient site was neglected by archaeology for a long time, looted and being destroyed for centuries, and only at the end of the 20th century was it systematically started to explore archaeologically by the Arhaeological Institute of the Faculty of Philosophy from Zagreb. Tilurium was located at an important crossing over the Cetina river and since prehistoric times it was an important intersection of roads that connected coast with the interior of Dalmatia. This valuable position was first recognised by the Delmatians, who built a fortress there, and then by the Romans, who at the beginning of the 1st century raised a military camp at that position. Architectural remains of soldiers' dormitories (centuries), ramparts, cisterns, several buildings and parts of the floor mosaic in the central part of the camp were discovered in the camp. 7th legion was a first military unit that was positioned in that camp. In 42 AD it received the honorary title Claudia Pia Fidelis. 7th legion Claudia Pia Fidelis left Tilurium in the middle of the 1st century, and since then, the camp had most of time been occupied by auxiliary units. From the middle of the 3rd century, the control of Tilurium was assumed by the consular beneficiaries. Despite the archaeological research that continues today, large parts of the site have not yet been explored, and require protection from potential looting and devastation.