Accessible through the visitor centre, the archaeological park uses architectural and horticultural tools and spectacular virtual reconstructions to show the area of Campona's Roman military camp, with its walls, towers and gates, its former buildings and main roads. The park is largely located on the site of the former orchard of the Nagytétény Castle, which was redeemed after the Second World War at the instigation of Géza Dáni, part owner of the castle, and became the property of the Hungarian National Museum. The ownership and the undeveloped nature of the site have contributed to the extensive archaeological research carried out between 1949 and 1960 and between 1995 and 2003, which has made it possible to identify the defensive works and the main periods of construction of Campona castellum. Visitors' walkways along the main roads of the camp allow us to discover the main southern gate of the camp facing the enemy, which had two wide gateways, a gate house and two gate towers. Through the gate, we enter the camp's wide main road, which was bordered on two sides by a covered walkway held up by pillars and a long building. The road led to the central building of the camp (principia), which was the religious and administrative centre for the troops stationed there. A path running along the base of the earth-fill behind the camp wall also takes the visitor to one of the camp's side towers and its eastern gate (porta principalis sinsitra). In the 4th century the camp was rebuilt as a fortress, its walls were raised and new towers added. Towers resembling fans were built on the corners. A special feature of the site is that the walls of the fan-shaped tower to the south-east, raised above the ground, can be seen in front of the visitor centre, opposite the playground. The reconstructions of the 2nd and 3rd century military camp and the 4th century fortress are visible on the northern fence of the park. Visitors will also be able to position themselves inside the ancient castellum, with three spectacular photo points from which they can see what the fortress of Campona might have looked like in the early 3rd century.
