Kikonion

The Great Istanbul Tunnel (Turkish: Büyük İstanbul Tüneli) is a proposed multi-use highway and railway undersea tunnel in Istanbul, Turkey to cross the Bosphorus strait.

Vahdettin Pavilion, a.k.a. Çengelköy Pavilion (Turkish: Vahdettin Köşkü or Çengelköy Köşkü) is the name of a rebuilt structure in Çengelköy neighborhood of Üsküdar district in Istanbul, Turkey. It is also the name of a historical timber mansion which stood at the same location. The original pavilion was used by the then Ottoman şehzade (prince) Mehmed Vahdettin. The site of this monument, which was demolished in 2013 and replaced with an inaccurate concrete replica, is now an official residence assigned to the President of Turkey. It is also used as state guest house. The residence was designed by the French-Ottoman architect Alexander Vallaury (1850–1921) and built by Ottoman Sultan Abdul Hamid II (reigned 1876–1909). The sultan allocated the building to his brother, Mehmed Vahdettin (1861–1926), who resided in the pavilion before he ascended the throne in 1918. As he was removed from throne in 1922, and was forced to leave the country, he gave the property to one of his odalisques. The real estate was parceled and sold to third persons.It is situated on a hill in Çengelköy, on the Asian part of Istanbul, overlooking the Bosphorus. The real estate covers an area of 65 decares (65,000 m2; 700,000 sq ft). There are additional buildings in the property including Old Köçeoğlu Pavilion, Kadın Efendi Pavilion and Ağalar Apartment.In 1988, Prime minister Turgut Özal (in office: 1983–1989) instructed the development of the pavilion into a rest home for the prime ministry. The restoration works terminated with the death of Özal in 1993. The contractor abandoned the buildings as the appropriations stood away. In 2007, the property was handed over from the Ministry of Culture and Tourism to the General Directorate for Foundations, which assigned it to the Prime Ministry. Prime Minister Recep Tayyip Erdoğan (in office: 2003–2014) ordered the restart of the renovation works. All the buildings were pulled down. During the 'reconstruction' no attention was given to the architectural details, materialization, orientation, location, or the existing surrounding landscape design. Three adjoining historical timber mansions were demolished as well, and similarly all of them were 'rebuilt' without giving any attention to the original designs. The buildings resemble the original monuments only superficially. For landscaping, an area of 4,000 m2 (43,000 sq ft) was nationalized by governmental decree in 2013. Hundreds of trees were felled surrounding the Pavilion, and a tall concrete wall now surrounds the complex. During Ramadan 2014 residents of 14 neighboring structures were evicted from their homes. The transformation works completed in August 2014. Vahdettin Pavilion is used by the prime minister and serves also as a state guest house.There are a greenhouse, a decorative pool with water lilies, a helipad and a parking garage in the residence area. The wood in which the pavilion is situated features about three hundred trees, including stone pine (Pinus pinea), linden (Tilia), oak (Quercus), cedar of Lebanon (Cedrus libani), laurel, redbud (Cercis) and gumwood (Commidendrum).

Kuleli Military High School was the oldest military high school in Turkey, located in Çengelköy, Istanbul, on the Asian shore of the Bosphorus strait. It was founded on September 21, 1845, by Ottoman Sultan Abdülmecid I. After the 2016 Turkish coup d état attempt Kuleli Military High School along with other Military High Schools was closed and turned into a museum.

Çengelköy is a neighborhood in the Üsküdar district on the Asian shore of the Bosphorus strait in Istanbul, Turkey, between the neighborhoods of Beylerbeyi and Kuleli. It is mainly a residential district. Many mansions were built there in the Ottoman period. From the 6th century, the port of Çengelköy was called Sophianai because of the palace Justin II built nearby for his consort Sophia.The name Çengelköy means "hook village" and indeed the village is nestled around a sharp turn of the Bosphorus shoreline, but the origin of the name is uncertain. One story put forward is that the village is named after the 19th-century Ottoman admiral Çengeloğlu Tahir Pasha, who had a waterside mansion built there (and there is a Çengeloğlu Street in Çengelköy). Another story derives the name from the Persian word çenkar, "crab," because of the abundance of seafood in the Bosphorus there. A 16th-century Ottoman document apparently refers to the place as "Çenger köyü."Çengelköy is world-famous for the small cucumbers once grown there (now grown in Kandıra). Opened in 2015, the Mehmet Çakır Cultural and Sports Center, consisting of six indoor swimming pools, is the biggest sports complex on the Anatolian part of Istanbul.The Vahdettin Pavilion, also known as the Çengelköy Pavilion, an official residence of the Presidency and a state guest house, is situated on a hill in Çengelköy.

Nausimachion was a coastal town of ancient Bithynia located on the Bosphorus. Its site is located south of Vaniköy in Asiatic Turkey.

The Beylerbeyi Mosque (Turkish: Beylerbeyi Camii), also known as the Hamid i-Evvel Mosque (Turkish: Hamid-i Evvel Camii), is a mosque located in the Beylerbeyi neighbourhood in Istanbul, Turkey. It was first built in 1777–1778 by the Ottoman sultan Abdülhamid I, but was later modified by Mahmud II in 1820–1821.

Beylerbeyi Spor Kulübü, formerly Pendik Çamlık Spor, is a Turkish women's football team based at Beylerbeyi neighborhood of Üsküdar district in Istanbul.

Beylerbeyi 75. Yıl Stadium (Turkish: Beylerbeyi 75. Yıl Stadyumu), also known as BoBeylerbeyi Stadium, is a football stadium in the Beylerbeyi neighborhood of Üsküdar district in Istanbul, Turkey. The venue was established in 1900. It is owned by the Istanbul Province Foundation Direktoriate, and run by the Beylerbeyi S.K. It underwent a restoration, and was reopened in March 2021. It has a capacity of 5,500 in one covered and two open bleachers. The artificial turf field with dimensions 105 m × 68 m (115 yd × 74 yd) is floodlight illumination.The stadium is home ground of Beylerbeyi S.K., and Fenerbahçe S.K. women's.

The Beylerbeyi Palace (Turkish: Beylerbeyi Sarayı), Beylerbeyi meaning "Lord of Lords", is located in the Beylerbeyi neighbourhood of Üsküdar district in Istanbul, Turkey, at the Asian side of the Bosphorus. An Imperial Ottoman summer residence built between 1861 and 1865, it is now situated immediately north of the first Bosphorus Bridge. It was the last place where Sultan Abdulhamid II was under house arrest before his death in 1918.

Kandilli Earthquake Museum, or more formally Museum of Kandilli Observatory and Earthquake Research Institut (Turkish: Kandilli Rasathanesi ve Deprem Araştırma Enstitüsü Müzesi), is a museum devoted mainly to seismology and earthquake science in Turkey. It is situated within the campus of Kandilli Observatory in Kandilli neighborhood of Üsküdar district in Istanbul. Owned by the Boğaziçi University, the museum was opened on June 21, 2006, and is housed in a renovated building, which was constructed in 1934 as a laboratory for seismography. In the museum, various scientific instruments are on exhibition that were used in astronomical and geoscientific works. There are also old books on display that are hand-written in Turkish, Arabic and Persian language about astronomy, astrology, mathematics and geography.

Beylerbeyi is a neighborhood in the Üsküdar municipality of Istanbul, Turkey. It is located on the Asian shore of the Bosporus, to the north of the Bosphorus Bridge. It is bordered on the northeast by the neighborhood of Çengelköy, on the east by Kirazlıtepe, on the southeast by Küplüce, on the south by Burhaniye, on the southwest by Kuzguncuk, and on the northwest by the Bosporus. Directly across the Bosporus is the Ortaköy neighborhood of Istanbul's Beşiktaş municipality. The main landmark of the neighborhood is the Ottoman Beylerbeyi Palace. Near the palace are various pavilions or kiosks (köşkler), including the two small seaside pavilions (Yalı Köşkleri), imperial stables (Ahır Köşkü), a "sunken" pavilion (Serdab Köşkü or Mermer Köşk), and a yellow pavilion (Sarı Köşk). Another highly visible site within the neighborhood is the toll plaza on the Otoyol 1 O-1 highway for the Bosphorus Bridge. Some of the wealthiest people in Turkey own homes in the Beylerbeyi neighborhood, including several members of the Sabancı family.Schools in the neighborhood include the Naval Petty Officers Preparatory School (Deniz Astsubay Hazırlık Okulu), Beylerbeyi Hacı Sabancı High School, Beylerbeyi Elementary School, and Lütfi Ercin Elementary School. Cultural centers in the neighborhood include the Akbank Beylerbeyi Art Gallery and the Urart Art Center. Mosques in the neighborhood include the Bostancıbaşı Abdullah Agha Mosque (1581; also known as the İstavroz Mosque), Hamid-i Evvel (Abdul Hamid I) Mosque (1778; also known as the Beylerbeyi Mosque), and Cennet (Heaven) Mosque (1967).Cemeteries in the neighborhood include the Beylerbeyi Küplüce Cemetery. Tekkes in the neighborhood include the Badawi Tekke of Beylerbeyi.

Kandilli Observatory, or more formally Kandilli Observatory and Earthquake Research Institute (KOERI, Turkish: Kandilli Rasathanesi ve Deprem Araştırma Enstitüsü) is a Turkish observatory, which is also specialized on earthquake research. It is situated in Kandilli neighborhood of Üsküdar district on the Anatolian side of Istanbul, atop a hill overlooking Bosporus.