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Gül Mosque (Turkish: Gül Camii, meaning: "The Mosque of the Rose" in English) is a former Eastern Orthodox church in Istanbul, Turkey, converted into a mosque by the Ottomans.

Kadir Has University (or as mostly preferred by its students KHAS) is a foundation university in Fatih, Istanbul, established in 1997 by Kadir Has, the late Turkish industrialist and philanthropist.Kadir Has University has six faculties: Faculty of Art and Design; Faculty of Communication; Faculty of Economics, Administrative and Social Sciences; Faculty of Engineering and Natural Sciences; Faculty of Law; and Faculty of Management. Kadir Has University is a research university, which aims to generate high quality research as well as students with competencies of highest standards by developing a new model of education that is application- and project-based. Prof. Dr. M. Sondan Durukanoğlu Feyiz is the current rector of the university. The Core Program, one of these models, aims to leave the traditional education style behind and to equip first year students with the creative and critical questioning skills they will need in all areas of society. As of 2019, they also aim to train graduates who can work anywhere in the world with another education system they have created called New Education Model. Research institutes at the university include the Centre for Energy and Sustainable Development, Istanbul Studies Center, the Sports Studies Research Center, the Gender and Women’s Studies Centre, the Center for International and European Studies and the Centre for Cybersecurity and Critical Infrastructure Protection. Kadir Has University also provides financial and consultancy support to its students through organizations such as the Creative Industries Platform (YEP).

Fener (Turkish pronunciation: [feˈnæɾ]; historically in Greek: Φανάρι, Phanári; in English also: Phanar) is a quarter midway up the Golden Horn within the district of Fatih in Istanbul, Turkey. The streets in the area are full of historic wooden mansions, churches, and synagogues dating from the Byzantine and Ottoman eras. The wooden mansions between the main axis and the shore were often used for importing wood from Pontus or the Black Sea area. Their picturesque facades were largely destroyed due to street widening requirements in the 1930s and later. The area's name is a Turkish transliteration of the original word "fanarion" (Medieval Greek: Φανάριον) (a lighting lantern, a streetlight, a lightpost with a light lantern). It was so called for a column topped with a lantern which stood there in the Byzantine period – used as a public light or marine and/or other purpose locator/beacon. After the Fall of Constantinople in 1453, the Fener district became home to many of the Greeks in the city. The Patriarchate of Constantinople moved to the area as well and is still located there. As a result, "Phanar(i)" (the traditional spelling) is often used as shorthand for the Ecumenical Patriarchate, just as "Vatican" is used for the Holy See of the Roman Catholic Church. During the Ottoman period, the Greek inhabitants of Fener were called "Phanariotes" and were important assistants to the Sultan in various capacities and offices. Wealthy Phanariotes were appointed as governors over provinces in Turkish Europe and Greece, and as hospodars of Wallachia and Moldavia between 1711 and 1821. The Phanar contains the patriarchal cathedral of St. George. Its main entrance is never opened since the then Patriarch was hanged there in 1821, at the time of Greek independence. The oldest surviving Greek school in Istanbul, Özel Fener Rum Lisesi, is found in Fener. The school was established in 1454. An important Bulgarian church, St. Stephen ("The Iron Church"), lies between the patriarchate and the shore of the Golden Horn. There are a number of other barely used Greek Orthodox churches.

The Yavuz Selim Mosque, also known as the Selim I Mosque and the Yavuz Sultan Selim Mosque (Turkish: Yavuz Selim Camii) is a 16th-century Ottoman imperial mosque located at the top of the 5th Hill of Istanbul, Turkey, in the neighborhood of Çukurbostan, overlooking the Golden Horn. Its size and geographic position make it a familiar landmark on the Istanbul skyline.

Eski Imaret Mosque (Turkish: Eski Imaret Camii) is a former Eastern Orthodox church converted into a mosque by the Ottomans. The church has traditionally been identified with that belonging to the Monastery of Christ Pantepoptes (Greek: Μονή του Χριστού Παντεπόπτη), meaning "Christ the all-seeing". It is the only documented 11th-century church in Istanbul which survives intact, and represents a key monument of middle Byzantine architecture. Despite that, the building remains one among the least studied of the city.

The Cathedral Church of St. George (Greek: Καθεδρικός ναός του Αγίου Γεωργίου; Turkish: Aya Yorgi Kilisesi) is the principal Eastern Orthodox cathedral located in Istanbul, the largest city in Turkey and, as Constantinople, capital of the Byzantine Empire until 1453, and of the Ottoman Empire until 1922. Since about 1600, it has been the seat of the Ecumenical Patriarchate of Constantinople whose leader is regarded as the primus inter pares (first among equals) in the Eastern Orthodox Church, and as the spiritual leader of 300 million Orthodox Christians worldwide.The church, dedicated to the Christian martyr Saint George, is the site of numerous important services, and is where the patriarch will consecrate the chrism (myron) on Holy and Great Thursday, when needed. For this reason, the church is also known as the "Patriarchal Church of the Great Myrrh". At one time, the patriarch would consecrate all of the chrism used throughout the entire Orthodox Church. However, now the heads of most of the autocephalous churches sanctify their own myrrh. The church is located in the Fener (Phanar) district of Istanbul, north-west of the historic centre of old Constantinople. (Its address is Fener Rum Patrikhanesi, Sadrazam Ali Pasa Cadesi, Fener 34220, Istanbul.) It is a relatively small church, especially so considering its status in world Christianity; this, however, can be explained by the Islamic laws of the Ottoman Empire that governed the rights of dhimmis, which stipulate that all non-Islamic buildings must be smaller and humbler than corresponding Islamic buildings such as mosques: prior to the Ottoman conquest of Constantinople in 1453, the church of the Patriarchate was the Hagia Sophia (also known as the Cathedral of Holy Wisdom). The church is open to the public from 8.30 am to 4 pm, but strict security screening is in place, as a measure against the possibility of an attack from Islamic extremist groups. It is visited by a stream of pilgrims from Greece and other Orthodox countries. Behind the church are the offices of the Patriarchate and the Patriarchate Library. The church, which was part of a convent or monastery before becoming the seat of the Patriarch, is outwardly unimpressive, but its interior is lavishly decorated.

The Golden Horn (Turkish: Altın Boynuz or Haliç; Ancient Greek: Χρυσόκερας, Chrysókeras; Latin: Sinus Ceratinus) is a major urban waterway and the primary inlet of the Bosphorus in Istanbul, Turkey. As a natural estuary that connects with the Bosphorus Strait at the point where the strait meets the Sea of Marmara, the waters of the Golden Horn help define the northern boundary of the peninsula constituting "Old Istanbul" (ancient Byzantium and Constantinople), the tip of which is the promontory of Sarayburnu, or Seraglio Point. This estuarial inlet geographically separates the historic center of Istanbul from the rest of the city, and forms a horn-shaped, sheltered harbor that in the course of history has protected Greek, Roman, Byzantine, Ottoman and other maritime trade ships for thousands of years. While the reference to a "horn" is understood to refer to the inlet's aerial silhouette, the significance of the designation "golden" remains more obscure, with historians believing it to refer to either the riches brought into the city through the bustling historic harbor located along its shores, or to romantic artistic interpretations of the rich yellow light blazing upon the estuary's waters as the sun sets over the city. Its Greek and English names mean the same, while its Turkish name, Haliç, simply means "estuary", and derives from the Arabic word khaleej, meaning "gulf". Throughout its history, the Golden Horn has witnessed many tumultuous historical incidents, and has been depicted in numerous works of art.

The Ecumenical Patriarchate of Constantinople (Greek: Οἰκουμενικὸν Πατριαρχεῖον Κωνσταντινουπόλεως, romanized: Oikoumenikón Patriarkhíon Konstantinoupóleos, IPA: [ikumeniˈkon patriarˈçion konstandinuˈpoleos]; Latin: Patriarchatus Oecumenicus Constantinopolitanus; Turkish: Rum Ortodoks Patrikhanesi, İstanbul Ekümenik Patrikhanesi, "Roman Orthodox Patriarchate, Ecumenical Patriarchate") is one of the fourteen to sixteen autocephalous churches (or "jurisdictions") that together compose the Eastern Orthodox Church. It is headed by the Ecumenical Patriarch of Constantinople, currently Bartholomew I, Archbishop of Constantinople. Because of its historical location as the capital of the former Eastern Roman (Byzantine) Empire and its role as the mother church of most modern Orthodox churches, Constantinople holds a special place of honor within Orthodoxy and serves as the seat for the Ecumenical Patriarch, who enjoys the status of primus inter pares (first among equals) among the world's Eastern Orthodox prelates and is regarded as the representative and spiritual leader of Eastern Orthodox Christians.The Ecumenical Patriarchate promotes the expansion of the Christian faith and Eastern Orthodox doctrine, and the Ecumenical Patriarchs are involved in ecumenism and interfaith dialogue, charitable work, and the defense of Orthodox Christian traditions. Prominent issues for the Ecumenical Patriarchate's policy in the 21st century include the safety of the believers in the Middle East, reconciliation of the Eastern Orthodox and Catholic churches, and the reopening of the Theological School of Halki, which was closed down by the Turkish authorities in 1971.

Kepos was a town of ancient Thrace, inhabited during Roman times.Its site is located above Melias Sinus in European Turkey.

The Cistern of Pulcheria (Greek: Κινστέρνα Πουλχερίας, Turkish: Pulcheria Sarnıcı) is a Byzantine period covered cistern built in Constantinople (modern Istanbul, Turkey).

Fındıkzade is a quarter in the European side of Istanbul, located in the north side of Fatih, the province's capital district (the walled city), lying between the quarters of Topkapı and Aksaray, and adjacent to the Hasseki, Yusufpaşa and Çapa quarters. The main roads of this quarter are Millet Caddesi (now called Turgut Özal Millet Caddesi) and Vatan Caddesi (now called Adnan Menderes Vatan Caddesi). Three of the major city's hospitals are located here, making of it one of the most important health district in Istanbul.

Çukurbostan is a quarter of the European side of Istanbul located in the north side of the Fatih district (the walled city). Although it is difficult to define exactly its boundary, Çukurbostan lies between the neighbourhoods of Balat and Atikali. In the quarter are located the Yavuz Selim Mosque and the Byzantine Cistern of Aspar. The cistern was used in the Ottoman period as a vegetable garden, and its name Çukurbostan ("sunken garden") gave the name to the quarter.