Kefeli Mosque

Boğdan Sarayi (Turkish for "Palace of Bogdania (Moldavia)") was an Eastern Orthodox church in Turkey's largest city, Istanbul. Erected in the Byzantine era, its original dedication is unknown. In the Ottoman era the small edifice, being dedicated to St. Nicholas of Myra, was known as Agios Nikólaos tou Bogdansarághi (Greek: Ἅγιος Νικόλαος τοῦ Βογδανσαράγι). and was part of the Istanbul residence of the Moldavian hospodar′s legation to the Ottoman Porte. The building – whose parts above ground have almost completely disappeared – is a minor example of Byzantine architecture in Constantinople.

The Odalar Mosque (Turkish: Odalar Câmîi, meaning "the mosque of the barracks" after the nearby accommodations of the married Jannisaries established in this quarter in the 18th century. Also: Kemankeş Mustafa Paşa Câmîi) was an Ottoman mosque in Istanbul. The building was originally a Byzantine-era Eastern Orthodox church of unknown dedication. In 1475, after the Fall of Constantinople (1453), it became a Roman Catholic church, dedicated to Saint Mary of Constantinople, until finally it was converted into a mosque by the Ottomans in 1640. The mosque was destroyed by fire in 1919, and since then has fallen into ruin. As of 2011, only some walls remain, hidden among modern buildings.

Kasım Ağa Mosque (Turkish: Kasım Ağa Mescidi; also Kâsım Bey Mescidi, where mescit is the Turkish word for a small mosque) is a former Byzantine building converted into a mosque by the Ottomans in Istanbul, Turkey. Neither surveying during the last restoration nor medieval sources have made it possible to find a satisfactory answer as to its origin and possible dedication. It is probable that the small building was part of the Byzantine complex and monastery whose main church was the building known in Ottoman era as the Odalar Mosque, whose dedication is also uncertain. The edifice is a minor example of Byzantine architecture in Constantinople.

The Cistern of Aetius (Greek: ἡ Κινστέρνη τοῦ Ἄετίου) was an important Byzantine water reservoir in the city of Constantinople. Once one of the largest Byzantine cisterns, it is now a football stadium in Istanbul. Since 1928 it has been known as Karagümrük stadyumu, 'Karagümrük stadium' or Vefa stadyumu, 'Vefa stadium', while in the Ottoman period it was known as the Turkish: Çukurbostan, lit. 'sunken garden'.

The Kariye Mosque (Turkish: Kariye Camii), and formerly known as the Church of the Holy Saviour in Chora (Greek: Ἐκκλησία τοῦ Ἁγίου Σωτῆρος ἐν τῇ Χώρᾳ), was a medieval Greek Orthodox church, now used as a mosque, in the Edirnekapı neighborhood of Istanbul, Turkey. The neighborhood is situated in the western part of the municipality (belediye) of the Fatih district. The building is an example of Byzantine architecture. In the 16th century, during the Ottoman era, it was converted into a mosque; it became a museum in 1945, and was turned back into a mosque in 2020 by President Recep Tayyip Erdoğan. Its desecularization has, however, been halted as of January 2021 due to lack of Islamic cultural significance and clerical interest in the site, compared to the Hagia Sophia. The interior of the building is covered with some of the oldest and finest surviving Byzantine Christian mosaics and frescoes; they were uncovered and restored after the building was secularized and turned into a museum.

Edirnekapı is a quarter of Istanbul, Turkey. It is part of the district of Fatih and belongs to the walled city. It corresponds roughly to the central part of the sixth Hill of Istanbul, which is the highest point of the walled city. It lies south of the Blachernae section of the Walls and of the neighborhood of Ayvansaray, northwest of Karagümrük and west of Salmatomruk. The quarter corresponds to the Byzantine quarter of Deuteron. The name Edirnekapı ("Gate of Edirne") hearkens back to Edirne's Gate (the ancient Gate of Charisius), crossed by the old road, which led to Edirne, the ancient Adrianople in Thracia. The district had a significant percentage of Orthodox Christian population, which left it for more central areas after 1955.The quarter is crossed by Fevzi Paşa Caddesi, one of the most important roads of the historic part of Istanbul.

Vefa Stadı (English: Vefa Stadium) (also named Karagümrük Stadı/Arena) is a football stadium located in Fatih, Istanbul that is the home ground of Fatih Karagümrük.Vefa Stadı is occasionally in use for the promotional play-off encounters in lower tier leagues, other sports including American Football and for public holiday ceremonies.

Hirami Ahmet Pasha Mosque (Turkish: Hırami Ahmet Paşa Mescidi) is a former Eastern Orthodox church converted into a mosque by the Ottomans. The small church, one among the 36 dedicated to Saint John the Baptist in Constantinople, was part of a monastery bearing the same name. Its full name was Saint John the Forerunner by-the-Dome (Greek: Ἃγιος Ἰωάννης ὁ Πρόδρομος ἐν τῷ Τρούλλῳ, Hagios Ioannis ho Prodromos en tō Trullō). It is the smallest Byzantine church of Constantinople still extant and has never been studied.

Çarşamba is a small part of the Fatih district of Istanbul, Turkey, close to the Fatih Mosque. It is one of the most conservative areas of the city. According to the 17th-century Ottoman traveler Evliya Çelebi, the district takes its name from the town of Çarşamba on the Black Sea coast since, after the Fall of Constantinople in 1453, this part of the city was repopulated with people from Çarşamba. However, others think it acquired its name from the large Wednesday (Çarşamba in Turkish) Market held here every week. The neighbourhood is home to two Byzantine churches that were converted into mosques after the Conquest of Constantinople in 1453: the Fethiye and Hirami Ahmet Pasha mosques. Çarşamba is also home to the Sultan Selim Mosque, built by Sultan Suleiman the Magnificent for his father Yavuz Sultan Selim (Selim the Grim in English) whose shrine stands in the grounds. The mosque is usually attributed to Mimar Sinan although there is no record of it in the official list of his works. it was a favourite with the Swiss-French architect Le Corbusier who admired its simplicity of form. Here, too, is the İsmail Ağa Mosque, built in 1724, and named after a Şeyhülislam named İsmail Efendi (1645-1725). Its congregation has a particular reputation for conservatism.

Vasat Atik Ali Pasha Mosque (Turkish: Vasat Atik Ali Paşa Camii), also known as Zincirlikuyu Mosque (Turkish: Zincirlikuyu Camii) or Karagümrük Mosque, is an Ottoman mosque located in the Karagümrük neighbourhood of the Fatih district in Istanbul, Turkey, on Fevzipaşa Street. Sultan Bayezid II's grand vizier Hadım Atik Ali Pasha, after whom the mosque is named, ordered its construction in 1502, and it was completed in 1512, one year after the grand vizier's death. The mosque is one of only two mosques in Istanbul with multiple domes, the other being Piyale Pasha Mosque, both having six domes. The mosque was known as Zincirlikuyu Mosque for a long time because of its location next to a well known as Zincirlikuyu (zincirli "chained", kuyu "well"). The minaret of the mosque collapsed in June 1648 after an earthquake. In 2013, repairs began on the minaret at a cost of 2.2 million TL ($1.03 million), expected to be completed in 2014. Pictures in the gallery below that were taken in 2015 show the restoration is finished.

Blachernae (Medieval Greek: Βλαχέρναι) was a suburb in the northwestern section of Constantinople, the capital city of the Byzantine Empire. It is the site of a water source and a number of prominent churches were built there, most notably the great Church of St. Mary of Blachernae (Panagia Blacherniotissa), built by Empress Pulcheria in c. 450, expanded by Emperor Leo I (r. 457–474) and renovated by Emperor Justinian I (r. 527–565) in the 6th century.

The Palace of the Porphyrogenitus (Greek: τὸ Παλάτιον τοῦ Πορφυρογεννήτου), known in Turkish as the Tekfur Sarayı ("Palace of the Sovereign"), is a late 13th-century Byzantine palace in the north-western part of the old city of Constantinople (present-day Istanbul, Turkey). An annex of the greater palace complex of Blachernae, it is the best preserved of the three Byzantine palaces to survive in the city (together with the ruins of the Boukoleon Palace; and the ruins of the Great Palace of Constantinople with its surviving substructures, retrieved mosaics and standing Magnaura section), and one of the few relatively intact examples of late Byzantine secular architecture in the world.