Yeni Kapu - St. Thaddeus and St. Bartholomew

The Saints Thaddeus and Bartholomew Armenian Church in Yeni Kapu, Istanbul is an Armenian Apostolic church located in the Yeni Kapu neighborhood of Istanbul. Saint Thaddeus and Saint Bartholomew are two apostles who played important roles in spreading Christianity in Armenia in the first century AD. According to tradition, Saint Thaddeus brought Christianity to Armenia and was martyred there, while Saint Bartholomew is said to have visited Armenia and converted many people to Christianity. They are both considered as saints in the Armenian Apostolic Church, which is one of the oldest Christian churches in the world.

The Armenian immigrants who built the Saints Thaddeus and Bartholomew Armenian Church in Yenikapi were originally from the town of Agulis, which is located in present-day Azerbaijan but was historically part of Armenian territories. They settled in Istanbul in the early 19th century and established a community there, which included the construction of the church. The exact date of the church's construction is 1832, and it was built in the traditional Armenian architectural style, with a rectangular plan and a central dome.

The church underwent several renovations and restorations throughout its history, particularly after the major earthquakes that occurred in Istanbul in 1894 and 1999. Despite these changes, the church still maintains much of its original architectural and decorative features, including its frescoes, wood carvings, and stone reliefs.