Introduction to Holy Trinity Square: Holy Trinity Square (Szentharomsag Ter) is located next to Matthias Church and is the central square of Castle Hill. The Holy Trinity Memorial Column erected on the square is to commemorate the Black Pandemic that swept across Europe in the 18th century. Built by a man who died of illness, the white memorial column has statues of the Holy Father, Jesus and the Cross. Surrounding this ancient house with red roofs and white walls is a small square. There are always some old cars parked aside, and occasionally a cyclist passes by. The young man on the bicycle has a strong European ancient city style.