The sightseeing route of Arsameia leads steeply uphill, with a zigzag path that most likely coincides with the old processional route. The discoverer of Arsameia, Friedrich Karl Dörner, described the most important places on this route as Sites I, II, and III. However, for incomprehensible reasons, their numbering does not reflect the order of sightseeing.

Going from the parking lot towards the west, first we reach Site II (37.942721, 38.656588). The most characteristic monument that is located there is the so-called the Mithras Relief that sparked the researchers' interest in Arsameia. Only its right half, representing the god Mithras, has survived. The relief shows the characteristic rays of the sun radiating from the god's head, because he was a solar deity. Mithras wears a Phrygian cap, originally associated with the Anatolian cult of Attis, the lover of the goddess Cybele. In Mithra's hand there is a bunch of twigs, known as barsom and used by priests in cleansing rituals. The back of the stone block, on which the figure of the deity was carved, is covered with inscriptions.

Of the left half of the relief, only a fragment of an arm was found, which Dörner, his discoverer, identified as a royal arm, because of the style of the robes. However, it is not known whether the relief depicted Antiochus I or his father Mithridates I. The whole scene probably represented a handshake between a deity and a ruler. This type of graphical representation is called dexiosis. Many similar reliefs have been preserved in the Kingdom of Commagene, testifying to the megalomania of their rulers, who saw themselves as equal to the gods. The present appearance of the relief is the result of the reconstruction carried out by Dörner, who reassembled the lower half and the upperquarters of the god Mithras.

Continuing the walk westwards, we come across Site I (37.942936, 38.655357). In the mountain slope, there are several natural caves used by people in prehistoric times. In addition, a monumental niche with an arched ceiling was carved into the rock. In the depths of the niche, there is a tunnel that leads down 14 steps to a vertical tunnel. Apparently, at its end there is a chamber on a square plan with the sides of 8 meters and a height of 9 meters. We could not confirm its existence during the visit, because for security reasons at the end of the stairs there is a solid trellis. As for the function of this chamber, the researchers are not in agreement. Dörner claimed that it was the temple of the god Mithras, i.e. Mithraeum. There are also theories that it was the burial chamber of King Mithridates I Callinicus.

On the left side of the entrance to the tunnel, there is another relief depicting dexiosis, preserved in deplorable condition. Also in this case, it was possible to identify the god Mithras standing on the right, distinguished by a radiant head, while the character on the right has not been recognised by the researchers. In front of the niche, there are two blocks, on which reliefs of human or divine characters were carved in the front. Their side and back walls are densely covered with inscriptions.

Behind Site I, the sightseeing route sharply turns eastwards to bring visitors to Site III (37.943325, 38.656036). A steep climb up the hill is soon rewarded with the view of the best-preserved dexiosis scene in Arsameia - a handshake exchanged between King Mithridates and the mythical hero Heracles. Mithridates, standing on the left, is clothed in magnificent robes, and he wears a kitaris - a tall crown, characteristic of the rulers of ancient Armenia. He shakes the hand of naked and bearded Heracles, who can be easily recognised by his famous club.

Slightly below this relief, there is the entrance to a tunnel. The inscription above it, written in five columns, contains the history of the founding of Arsameia and the construction of the hierothesion on its territory, instructions for the proper performance of religious rituals, and the titles of Antiochus, Mithridates, and the queen Laodice, the daughter of Antiochus. Antiochus himself is mentioned here as Ἀντίοχος ὁ Θεὸς Δίκαιος Ἐπιφανὴς Φιλορωμαῖος Φιλέλλην, i.e. Antiochus, a just, eminent god, friend of Romans and friend of Greeks. Thanks to the fact that the inscription was underground since antiquity, it is in excellent condition.

The already mentioned tunnel was carved in the rock for a purpose unknown to us. It is almost 160 meters long and goes deep into the earth. This tunnel is unsecured and courageous adventurers can go down to its end, descending on steep steps. However, this is a dangerous task because the tunnel lies in total darkness. Therefore, a flashlight, as well as proper footwear, are essential, as some of the steps are very worn, and the tunnel is sometimes flooded. After covering the first 50 meters, the tunnel becomes lower and steeper. In the end, unfortunately, there is no pleasant surprise, just stones and fragments of pottery, plus modern candy wrappers and plastic bottles that came down to the bottom together with rainwater.

Behind Site III, the path turns sharply westwards and continues steeply uphill to the Acropolis (37.943759, 38.655409). Foundations of buildings were found there, with floors decorated with mosaics dated to the second century BCE. On the basis of the excavated fragments of sculptures depicting King Antiochus I and his mother Laodice, Dörner put forward the theory that there was also a mausoleum of King Mithridates in this location, decorated with these statues. It is certainly a place worthy of a king, with a great view of the area. Because in the case of other known Commagene hierothesions - Mount Nemrut Karakuş Tumulus - the rulers of Commagene were buried close to the peaks, Dörner's theory seems to be better justified than the claim that Mithridates rested in the niche of Site I.