Kuleli Çengelköy Havuzbaşı Park Historical Çınaraltı

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. The project's completion is expected in 2020.

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.

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.

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

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

Çengelköy is a neighborhood in the Üsküdar district on the Asian shore of the Bosphorus, 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.