For 1,700 years, no one knew where the First Council of Nicaea actually took place. The answer may have been sitting in a ...

Pope Leo XIV greets participants attending a conference on the ecumenical implications of the 1,700th anniversary of the Council of Nicaea June 7, 2025, in the Clementine Hall of the Apostolic Palace ...

From the beginning of his election as the successor to St. Peter, Pope Leo XIV has summoned the Church to a renewed faith in the one Savior. As he said emphatically in the opening Mass of his ...

In the past week, scientists announced the discovery of ancient Roman ruins underneath the surface of the lake in Iznik, Turkey. But this was not just any archaeological discovery. They have may have ...

The Catholic Church this year marks the 1,700th anniversary of the First Council of Nicaea, the first ecumenical synod in the history of the Church, convened by Emperor Constantine in what is now the ...

A wall fresco depicting the First Council of Nicaea in the Sistine hall of the Vatican Library. (CNS photo/Carol Glatz) The various liturgical calendars in use throughout most of Christianity feature ...

Pope Leo XIV traveled to join Orthodox patriarchs in commemorating an important moment in Christian history, gathering at the ...

When the Roman Emperor Constantine convened the Council of Nicaea in 325 A.D., both the church and the empire were in a state of flux. A little more than a decade earlier, Constantine had legalized ...

On Sunday, 20 April, more than two billion Christians around the world will celebrate Easter, the most sacred day of the church calendar. When they do so, their celebration will draw on a tradition ...

A Catholic archbishop in Turkey has termed the commemoration of the 1700 th anniversary of the Ecumenical Council of Nicaea as “an opportunity for ecumenical dialogue and unity.” Archbishop Martin ...