Mehmet Çakır Cultural and Sports Center

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.

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.

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.

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).

Kikonion was a coastal town of ancient Bithynia located on the Bosphorus.Its site is located near Çengelköy in Asiatic Turkey.

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

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.

The largest mosque in Turkey, Grand Çamlıca Mosque (Turkish pronunciation: [tʃamlɯdʒa]) (Turkish: Büyük Çamlıca Camii) is a complex of Islamic worship which was completed and opened in March 2019. The mosque is located on Çamlıca Hill of Üsküdar district in Istanbul, and showcases an art gallery, a library, and a conference hall. The cost of the mosque was US$110 million (approx. 550 million Turkish Liras at the time), which was an investment into the megaproject plan by the Turkish government. The architectural design planning of Çamlıca Mosque began in the year 2000 and was led by two female architects, Bahar Mızrak and Hayriye Gül Totu. The design of the mosque was inspired by Classical Ottoman architecture and the works of Mimar Sinan.

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.

Kandilli Anatolian High School for Girls (Turkish: Kandilli Kız Anadolu Lisesi) is a secondary educational institution located in the Kandilli neighborhood of Üsküdar district in Istanbul, Turkey. Known traditionally as Kandilli Kız Lisesi, it is one of the oldest girls' high schools of the country and a top-level Anatolian High School.

Adile Sultan Palace (Turkish: Adile Sultan Sarayı) is the former royal residence of Ottoman princess Adile Sultan. It was donated to the state by Adile Sultan to be used as a school building for the Kandilli Anatolian High School for Girls and is today a cultural center. It is located in the Kandilli neighbourhood of Istanbul, Turkey.

Çamlıca TRT Television Tower (Turkish: TRT Çamlıca Verici İstasyonu) was a communications tower in the Üsküdar district of Istanbul, Turkey, which was owned and operated by the state-owned Turkish Radio and Television Corporation (TRT). It was demolished in late 2020 after 48 years in service.