[2] St. Helena Catholic Church was designed by Raymond Charles Péré, the architect of İzmir Clock Tower in Konak.

[2] The church rose on land allocated to the Catholic Community of Father Don Alfonso Vallery in the early 20th century.

Construction was completed in 1904, with the financial support of Count Nikolai Alliotti and permission granted by Abdul Hamid II.

[3] Structural issues led to an interior renovation in 1968, with efforts to protect the church's historical character.

This church is built on the Basilica plan, inspired by Gothic architecture.