The Holy Trinity Cathedral is a Ukrainian Orthodox cathedral located in the city of Chernihiv, Ukraine. It is considered to be one of the most impressive and beautiful cathedrals in Ukraine, and is a UNESCO World Heritage Site. The cathedral was constructed in the 11th century and is a remarkable example of early Ukrainian Orthodox architecture.

The Holy Trinity Cathedral features a distinctive Byzantine-style architecture with five domes and a cross-shaped floor plan. The exterior of the cathedral is adorned with intricate carvings and decorations, and the interior is decorated with frescoes, mosaics, and icons. Some of the most notable features of the cathedral include the frescoes of the Last Judgment, the icons of the Virgin Mary, and the intricate carvings on the columns and arches.

Throughout the centuries, the Holy Trinity Cathedral has been damaged and restored several times. In the 17th century, the cathedral was completely rebuilt and expanded, and in the 20th century, it underwent a major restoration process that lasted for over 30 years. Today, the cathedral remains an important symbol of Ukrainian Orthodox Christianity and is a popular destination for tourists and pilgrims.