Holy Trinity Greek Orthodox Church

Holy Trinity Greek Orthodox Church is a house of worship in Sioux City that features Byzantine architectural forms built in brick and stone. The structure is distinguished by a prominent dome, ornate stained glass windows, and traditional Orthodox Christian elements integrated throughout its design.

William L. Steele designed this building in 1925, blending Prairie School architectural principles with Orthodox Christian design traditions. Following a major fire in February 1996, the interior underwent complete renovation to restore the structure.

This church serves as a gathering place for the local Greek Orthodox community, where members practice their faith and maintain cultural traditions together. Services are held regularly in both English and Greek, reflecting how the congregation has adapted while preserving its heritage.

The church is located in downtown Sioux City on 6th Street and is easy to find in the area. Visitors should know that the building was restored following the 1996 fire, so modern safety features are in place throughout the structure.

This stands as the oldest and largest Orthodox Church structure in Iowa, making it a remarkable building for the region. The interior houses a handcrafted iconostasis created by woodcarver Steve Kavroulakis, a detail many visitors overlook.