Erected according to the model of the Italian mendicant order churches of that period, the church had a three-nave rectangular base, with squared-off eastern end and a square sanctuary which is covered by ribbed groin vaults.

The Gothic-style portal, lancet windows and the prominent bell tower (which has been transformed into a minaret by the addition of a conical roof) distinguished the building from the Byzantine churches in the city.
On the other side, the technique used for the brickwork was local, and alternated small courses of bricks and ashlar.

The NE nave was possibly flanked by a series of chapels, each of them belonging to a noble Genoese family.
One of them was dedicated to the Virgin Mary, and another to Saint Nicholas.
As a whole, the building resembled the churches of Chieri and Finale Ligure in Italy.

The flat wooden roof and rather pretty wooden galleries date from the restoration in 1913-1919.
On this occasion, the height of the building was lowered, and many Genoese headstones were found.
During the same restorations, rests of paintings were also discovered near the Mihrab, but were covered again.

In the passage under the belfry, moldings are still visible, as well as fragments of stones with armorial bearings which were once placed along the wall.
On the north side of the building there is a large and attractive courtyard with a şadırvan.

Today, Arap Camii is the largest mosque on the Galata side of the Golden Horn.
It is one of the most interesting mosques in the city due to its early Italian Gothic architectural style and church belfry, which has practically remained unaltered even after being converted into a minaret.
Erected according to the model of the Italian mendicant order churches of that period, the church had a three-nave rectangular base, with squared-off eastern end and a square sanctuary which is covered by ribbed groin vaults.
The Gothic-style portal, lancet windows and the prominent bell tower (which has been transformed into a minaret by the addition of a conical roof) distinguished the building from the Byzantine churches in the city. On the other side, the technique used for the brickwork was local, and alternated small courses of bricks and ashlar.
The NE nave was possibly flanked by a series of chapels, each of them belonging to a noble Genoese family. One of them was dedicated to the Virgin Mary, and another to Saint Nicholas. As a whole, the building resembled the churches of Chieri and Finale Ligure in Italy.
The flat wooden roof and rather pretty wooden galleries date from the restoration in 1913-1919. On this occasion, the height of the building was lowered, and many Genoese headstones were found. During the same restorations, rests of paintings were also discovered near the Mihrab, but were covered again.
In the passage under the belfry, moldings are still visible, as well as fragments of stones with armorial bearings which were once placed along the wall. On the north side of the building there is a large and attractive courtyard with a şadırvan.
Today, Arap Camii is the largest mosque on the Galata side of the Golden Horn. It is one of the most interesting mosques in the city due to its early Italian Gothic architectural style and church belfry, which has practically remained unaltered even after being converted into a minaret.
Arap Mosque