USS Thornback (SS-418)

Hasköy is a district on the northern bank of the Golden Horn in Beyoğlu, Istanbul, Turkey. It includes the neighborhoods of Keçeci Piri, Piri Paşa, and Halıcıoğlu, and parts of Camiikebir and Sütlüce. Hasköy means "imperial village" in Turkish, a reference to the pavilions and gardens belonging to the Ottoman sultan and his court once found here. According to other sources, the name is a corruption of Aya Paraskevi, Αγία Παρασκευή, the local Greek Orthodox church.In the late fifteenth century, Jews expelled from Spain and Portugal took refuge in the Ottoman Empire and many of them settled in Hasköy. In the late sixteenth century, the Jewish community of Eminönü was displaced by the construction of the New Mosque (Yeni Cami) and also moved to Hasköy. The neighborhood also had many Armenian and Greek residents in the past. It was known to Armenian speakers as Khasgiugh (Խասգիւղ), "khas" reflecting the older pronunciation of the Turkish word "has" and "giugh" being the Armenian word for village. Hasköy was a trading area with many dockyards and warehouses. The first Armenian theatre company in Istanbul was founded here in 1858.Local attractions include the Aynalıkavak Palace and the Rahmi M. Koç Museum. At one time there were several active synagogues in Hasköy including the Maalem Synagogue, Hesed Le Avraam Synagogue, the Karaite Synagogue and the former Mayor Synagogue. The Greek Orthodox Church of Aya Paraskevi (Saint Paraskevi) still functions and has been provided by the Ecumenical Patriarchate to the local Romanian Orthodox community. The Surp Stepanos (Saint Stephen) Armenian Church was established by Armenian immigrants from Eğin. From 1852 to sometime in the 20th century, the Halıcıoğlu Armenian Protestant Church also offered services; while from 1889 to 1975, there was also a chapel attached to Hasköy's Kalfayan Orphanage, the Surp Asdvadzadzin (Saint Mary) Armenian Church.Local mosques include the Handan Agha Mosque, and Kırmızı Minare Mosque. Local cemeteries include the Hasköy Muslim Cemetery, the Beyoğlu Greek Cemetery, the Beyoğlu Jewish Cemetery, the Turkish Karaite Congregation Cemetery, and the Hasköy Armenian Cemetery. The Jewish Cemetery contains the grave of Abraham Kamondo, a banker to the Ottoman court. On April 26, 2011, the cemetery was desecrated by vandals who smashed several headstones in what appears to have been an act of anti-Semitism.

Kırmızı Minare Mosque (Red Minaret Mosque) is a mosque in the Hasköy neighborhood of Beyoğlu, Istanbul, Turkey. It was probably built in 1591 by Kiremitçi Ahmet Agha and so is also known as the Kiremitçi Ahmet Agha Mosque. It received the name "Red Minaret" because of its red brick minaret. The building was restored in 1889 and 1994.

Mayor Synagogue is a former synagogue in the Hasköy district of Beyoğlu, Istanbul, Turkey.

Handan Agha Mosque is a mosque near the Golden Horn in the Hasköy neighborhood of Beyoğlu, Istanbul, Turkey. It is also known as the Kuşkonmaz or "Birds Don't Perch" Mosque. One of Sultan Mehmed II's aghas, Handan Agha, had it built in the 15th century. The interior is decorated with İznik tiles from the 16th and 17th centuries, with some maiolica tiles from the 19th century. The basement of the mosque was formerly a boathouse, until the coastline was filled for land reclamation. The mosque was repaired in the 18th and 19th centuries, and the 1960s.

Atik Mustafa Pasha Mosque (Turkish: Atik Mustafa Paşa Camii; also named Hazreti Cabir Camii) is a former Eastern Orthodox church in Istanbul, converted into a mosque by the Ottomans. The dedication of the church is obscure. For a long time it has been identified with the church of Saints Peter and Mark, but without any proof. Now it seems more probable that the church is to be identified with Saint Thekla of the Palace of Blachernae (Greek: Άγία Θέκλα τοῦ Παλατίου τῶν Βλαχερνών, Hagia Thekla tou Palatiou tōn Vlakhernōn). The building belongs stylistically to the eleventh-twelfth century.

The Karaite Synagogue (Hebrew: בית הכנסת הקראי באיסטנבול; Turkish: Karahim Sinagogu, Karaim Sinagogu, Karayim Sinagogu) is a Kenesa in the Hasköy district of Beyoğlu, Istanbul, Turkey. The building's date of construction is unclear; it may date to Byzantine times. The building was in ruins in the sixteenth century; it was repaired in 1536, burned in 1729, rebuilt, burned again in 1774, rebuilt between 1776 and 1780, restored in 1842, and burned again in 1918. The Karaite congregation of the town also has their own cemetery. The trust behind these Institutions is called Hasköy Türk Karaim Musevi Sinagogu Vakfı. Today the Kenesa functions only at the Karaite Pesach. Contact to the congregation can be built via the Turkish Chief Rabbinate or the Quincentennial Foundation Museum of Turkish Jews.

Toklu Dede Mosque (Turkish: Toklu Dede Mescidi, where mescit is the Turkish word for a small mosque), was an Ottoman mosque in Istanbul, Turkey. The building was originally a Byzantine Eastern Orthodox church of unknown dedication. It was almost completely destroyed in 1929.

Maalem Synagogue is a synagogue located on the slopes overlooking the Golden Horn near the Jewish old age home in the Hasköy district of Istanbul, Turkey. It is the only remaining open synagogue in an area that once had many Jewish residents. The synagogue is open for visits only during weekdays. Shabbat services are held regularly.

Ayvansaray is a neighborhood in Istanbul, Turkey. It is part of the district of Fatih and part of the walled city. It lies between the southern shore of the Golden Horn, the Blachernae section of the Walls, and the neighborhoods of Balat and Edirnekapı. It corresponds to the old quarter of Blachernae (Vlachérnai in Greek). The name Ayvansaray is from Persian ایوان‌سرای (Iwan + Saray) and means "Veranda Palace". This name hearkens back to the Palace of Alexios I Komnenos (now disappeared), which was part of the complex of Blachernae.Ayvansaray has a number of historic monuments, like the Palace of the Porphyrogenitus (Tekfur Palace), the mosque of Atik Mustafa Pasha (originally a medieval Byzantine church), and the Ayazma ("holy spring") enclosed in the small church of St. Mary of Blachernae. It is a picturesque quarter.

Paulines was a town of ancient Thrace, inhabited during Byzantine times.Its site is located outside the Blachernai walls in European Turkey.

Saint Mary of Blachernae (full name in Greek: Θεοτόκος των Βλαχερνών (pr. Theotókos ton Vlachernón); Turkish name: Meryem Ana Kilisesi) is an Eastern Orthodox church in Istanbul. The small church building was constructed in 1867 on the site of a fifth century shrine which had the same dedication. The shrine had been one of the most important sanctuaries of the Greek Orthodox Church until its destruction in 1434.

Haliç Bridge (Turkish: Haliç Köprüsü, "Golden Horn Bridge") is a highway bridge on the Golden Horn (Turkish: Haliç) in Istanbul, Turkey. It connects the neighborhoods of Ayvansaray in the southwest and Halıcıoğlu in the northwest. The bridge carries the O-1 motorway, also known as the Istanbul Inner Beltway. It was constructed between 1971 and 1974, and entered service on 10 September 1974. The engineering firms which undertook the construction works were IHI Corporation of Japan and Julius Berger-Bauboag AG of Germany. The bridge has a length of 995 m (3,264 ft), a width of 32 m (105 ft), and a height of 22 m (72 ft) above sea level.