In 1926, on the 400th anniversary of the battle at Mohács, Nándor Baranyai town clerk and the leaders of the Jesuits in Érd, at the proposal of the Military Museum, erected a monument at the intersection of Római Street and Kastély Street, at the beginning of the road leading to the castle.
 
The inscription on the monument recalls the few days that King Louis II spent in Érd on his way to Mohács.
 
The monument, standing in front of the buttress of the castle, is decorated with a lion from the Roman Ages. The other adornment of the memorial is the coat of arms of the Sárkány family of Ákosháza.
 
The town renovated the monument in honour of the year of the Millennium. Besides the stone-conservation of the actual memorial, the immediate environment was reinstated, a stone stairway was created, and the original, carved stone pathway to the castle was excavated.