The Church of St. Constantine and Helena is located in the Kirişhane neighbourhood in the southeastern part of Edirne; in Abdurrahman Quarter, Uzunkaldırım Street, Taş Mektep Street, in the vicinity of Yeşilce Mosque, Kasımpaşa Mosque and Süleyman Çelebi Mosque, which are Ottoman Period buildings.
Sv. Konstantin and Helena Church is a Bulgarian Orthodox church built in 1869, in the second half of the XIXth century. The building has acovered area of approximately 400m2 and shows the density of the Bulgarian population in this area in the middle of the XIX century.
The Church of Sv. Konstantin and Helena is a basilica with three main parts: the semi-open narthex, the main space and the apse. The basilica is 14,93 m. long, 3,75 m. wide and the narthex has an area of approximately 56m2 . On the west façade of the building, there is a 50 cm. high, 100 cm. wide inscription inside the semicircular arch built of brick above the centre opening. This inscription gives brief information about the history of the building:
''In the name of the one and living creator and inseparable trinity consisting of the Father, the Son and the Holy Spirit, by the grace of His Imperial Majesty Sultan Abdül-Aziz Han, on 3 March 1869, in Kirişhane, the construction of the Orthodox Bulgarian Orthodox Church named after the equally sainted Holy Constantine and Helena began and was completed on 25 September of the same year, and the church was built in Edirne in 1869 in accordance with the initiative of the public-spirited Bulgarians, the Bulgarian Celebs' Union and the People's Community.''
However, as a result of the migration of the community during the exchange years, the building was left alone with its fate. The restoration project and implementation works, which started in December 2003, were completed in 2008 and opened to worship and visitation.
