Alexander Nevsky Cathedral.

The St. Alexander Nevsky Cathedral in Sofia, Bulgaria, is a stunning example of Neo-Byzantine architecture, renowned for its golden domes and intricate mosaics. Designed by Russian architect Alexander Pomerantsev, the cathedral features a striking cross-domed basilica with a central dome soaring to 45 meters and a 53-meter bell tower. Its ornate interior, adorned with Italian marble, Brazilian onyx, and richly painted icons, can accommodate up to 5,000 worshippers. Built to honor Russian soldiers from the Russo-Turkish War, it symbolizes Bulgaria's historical ties with Russia. The cathedral also houses significant relics, including a piece of the True Cross. Set in beautifully landscaped grounds, it serves as both a spiritual hub and a cultural venue, drawing millions of visitors each year to appreciate its artistry and heritage.