The Church of St. Constantine and Helen Located in the heart of the Old Town, right next to the eastern gate of the ancient acropolis, the Church of St. Constantine and Helen is another landmark that reflects the rich historical and cultural heritage of Plovdiv. As one of the oldest churches in the city, it was built on top of the very wall of the acropolis, emphasizing its significance throughout the centuries. Much like the Church of St. Mary, the Church of St. Constantine and Helen has also undergone numerous разруptions and reconstructions by various civilizations, including Romans, Byzantines, Greeks, Turks, and Bulgarians. Its current appearance was shaped in 1832, making it an architectural wonder that has withstood the test of time. The architectural style of the church combines elements from different periods, reflecting the diverse past of the region. The interior of the church is adorned with a beautiful iconostasis crafted by masters from the Debar School. This masterpiece of early Bulgarian baroque is covered in gold leaves, making it visually stunning artwork. Additionally, the church houses numerous icons created by some of the most renowned Bulgarian iconographers of the time, such as Захарий Zograf, Dimitar Zograf, and Stanislav Dospevski. These valuable pieces of art not only decorate the church's interior but also provide precious insights into the artistic styles and techniques of the period. Today, the Church of St. Constantine and Helen continues to function as an active Eastern Orthodox church within the Plovdiv Spiritual District. It serves not only as a place of worship for believers but also as a valuable cultural monument, attracting tourists and researchers from around the world. With its rich history, architectural wonders, and artistic treasures, the Church of St. Constantine and Helen remains another one of the most notable landmarks of Plovdiv and an essential part of the city's cultural legacy.