It is downtown Sofia close to the Sofia University and the St. St. Cyril and Methodius National Library. It was built in the beginning of 20 c. by the prominent Russian architect Pomerantsev in memoriam to those killed in the Russo-Turkish war of 1878. And the Knyaginya Maria Louisa blvd. It stands behind the Sheraton , Sofia hotel amidst the ruins of the ancient town of Serdica. St. Petka Samardjiiska Church huddled in the underpass off the Sheraton hotel, the Church dates back to the Middle Ages.
Frescos inside are from different historic periods.
St. Sophia this is the oldest East-Orthodox Church in Sofia. During the Ottoman rule it was turned into a mosque. After a devastating earthquake in 19 c. it was abandoned and only in 1900 it was restored in full. St. St. Cyril and Methodius and their five disciples the Church on Graf Ignatiev St. was built in 1528 by Turkish architect Sinan as a mosque, called the Black mosque its minarets were of black marble. The St. Nicholas Russian Church was built in 1912 and is at the corner of the Tsar Osvoboditel Blvd.