Holy Trinity Square (Hungarian: Trinity Square) is the central square of the Castle Hill It is bordered to the north by the former building of the Ministry of Finance and to the east of the Matthias Church..

At the center of the square there is the Holy Trinity Column (Hungarian: Szentháromság-szobor), a Baroque plague column from the 18th Century. This was designed in 1741 by the Würzburg Philipp inequality and to the memory of the plague in 1691 to keep awake. The column has a height of 14 meters. At its head is a Trinity group. At the foot of the column, the artist has placed several statues. The relief and the coat of arms on the pedestal created by the sculptor Antal Hörbiger. Today's Plague is only a replica of the original monument, because it has been damaged in the Second World War greatly