The most successful foreign research program of the Pázmány Péter Catholic University's Archeology Institute is the exploration of a margaric crusader castle for nearly a decade in Syria. The Hungarian Kingdom was in its golden age in the 13th century and was one of the most prestigious states in Europe of the time. In 1217 Hungary was the only country in Central Europe who launch a crusade with the leadership of its own ruler. In the Crusade of King Andrew II, not only did he visit the margati fortification, but he gave a huge annuity from the income of the salt stock of Szalacsi.

One of the main questions of Andrew II’ research was where was our king's burial place located? According to the most reliable sources, Andrew II and his second wife the Emperess Constantinople, Yolanta Courtenay was buried in the monastery of Egres on the bank of the Maros. Due to the storms of history, most of our royal medieval tombs were destroyed. The exploration of the burial site of Andrew II., the most prestigious ruler from the golden age of the Árpád House is of great importance for national memory and history.