The Cathedral Church of the Holy Trinity Monastery holds a unique place in the city’s history as both the oldest surviving Orthodox church and the city’s oldest brick structure. This remarkable brick church stands on the grounds of the original church that once graced the Ust-Kamenogorsk fortress, established in 1720.

In a significant transformation, on June 11, 1993, the church was converted into a fully functional monastery. With accommodations for up to 30 individuals, the monastery serves as a haven for spiritual contemplation and devotion. Additionally, it boasts a Sunday school, contributing to the nurturing and dissemination of religious knowledge within the community. This venerable site stands as a living testament to the city’s enduring heritage and its commitment to preserving and sharing its historical roots.