Yalıköy is one of the two oldest districts in Beykoz. Its name comes from the ocher-painted seaside mansions on the coast. This oldest of Beykoz’s settlements with Beykoz Prairie, Bostancıbaşı Mustafa Ağa Mosque, İshak Aga Fountains, its factories that formed the heart of Ottoman industry, its pavilion, barracks, shipyard, pier, Ahmed Mithat Efendi seaside mansion, is also known for an internatinal agreement signed on its pier. The Khedive of Egypt starts a riot with the backing of England and France. Khedive Mehmet Ali Pasha comes up to Kütahya with his army. The Ottoman State asks for Russia’s help on this matter and the Russian navy anchors in the Bosphorus. The Hünkar Pier Agreement is signed on the pier for mutual support and non-aggression with the Russians on July 8, 1833. As this state casts doubt into the minds of the English and the French, the Ottoman State signs the Kutahya Convention with Mehmet Ali Pasha. The Pasha withdraws from the lands he occupied and returns to Egypt. A monument is erected on Serviburnu where the Russian sailors raised their camp during the Hünkar Pier Agreement. The monument is 3 meters tall and 1 meter wide. The students of Rehber-i Ittihad-i Osmani School destroy the monument, which had text in Turkish on one face in 1914. 20 years after the agreement, in 1854, Khedive Mehmet Ali Pasha builds a pavilion right by the pier on which the agreement was executed, facing the monument and presents it to the Sultan of the period in order to forget the past events. The Khedive’s purpose is building a permanent structure that will overshadow the pier and monument that are reminders of the incident, and to apologize. Sultan Abdulaziz stayed here when he came to hunt in the Tokat Garden. Prince Napoleon was hosted in this pavilion and the French Queen Eugenie dined here.
The pavilion built inside 200,000 square meters also has a grove of 8 hectares. Some of the rare trees from Europe in the grove survived until today. Zelkova Carpinifolia and the Himalayan Cedars are some of these trees. Doubtless, the most interesting structure in the grove is its artificial cave hidden inside the greenery. This cave that can only be reached through a narrow and winding road is actually a bath. The walls of this artificial cave are covered with seashells and it has also been used to avoid the summer heat.
There are almost no other Turkish neighborhoods that preserve their traditional architectural texture in Istanbul. Hacı Osman, Baharatçı, Kuyu, adjacent houses with alcoves on Fıstıklı yalı Street and Şahinkaya Avenue, represent the 19th century Istanbul.