The interior is expansive and solemn divided by vaulted arches. On the surface above the main altar there are two circular windows. The lateral altars are enclosed in semi-circular conches. There is one window in the central part of each conch. The interior walls still bear marks of the old frescoes. In the ni
ches adorned by columns and connecting arches ornamental patterns of plants and flowers can still be seen. Similar ornaments have been used on the cupola. The cathedral used to have five entrances with front doors.
The architectural eloquence and ornaments of the cathedral in Talin harmonize with each other beautifully and form the unique overall picture this one-of-a-kind masterpiece. Twice the cathedral suffered from earthquakes, its cupola is partly preserved. At a distance of about 200 meters from the cathedral is the 7th century St. Virgin’s church with three altars. Its cruciform naves and uneven: the western one is deeper and has entrances from the south and the front part. In the central part of all frontons and beneath the cupola there are windows adorned with ornaments. The church is in a relatively good shape.