According to legend, Barbara was an Eastern Saint shut by her father in a tower only illuminated by two windows to avoid her conversion to Christianity. Even so, she found a way to become a Christian and be baptized, which is why a third window was opened as a symbol of the Holy Trinity.

Saint Barbara has an iconography, or representation, which is rather consolidated given that she normally appears with the palm, as a saint martyr, a royal crown, given her noble lineage and, as a more representative attribute, the tower of two or three windows.