A structure trying to resist the ravages of time and circumstance in Baltalimanı, the pearl of the Bosphorus: The Mediha Sultan - Damat Ferid Pasha Mansion. Also known as the "Baltalimanı Coastal Palace," this magnificent building is more than just a residence; it hosted the political decisions of the Tanzimat period, witnessed the tragic stories of the Ottoman dynasty, and gained entirely different functions during the Republican era. Today, although it has largely lost its original architecture, it continues to exist as one of the most intriguing structures on the shores of the Bosphorus.

History and Its Inhabitants

The mansion was built by Grand Vizier Mustafa Reşid Pasha, a prominent statesman of the Tanzimat period. Designed as one of the most popular coastal palaces of its time, the structure was initially known as the "Baltalimanı Coastal Palace." It was the female members of the Ottoman dynasty who gave the mansion its true identity. When Fatma Sultan, daughter of Sultan Abdülmecid, married Galib Bey, the son of Mustafa Reşid Pasha, she moved into this mansion and was forced to live there until the end of her life. After Fatma Sultan's death, the mansion was inherited by her sister, Mediha Sultan. With Mediha Sultan's marriage to Damat Ferid Pasha, the mansion entered a new era. Due to this marriage, the structure began to be called the "Damat Ferid Pasha Coastal Palace" or "Mediha Sultan Coastal Palace." Damat Ferid Pasha had the selamlık (men's quarters) section, also known as the "Pasha's Quarters," built to the north of the 33-room building that formed the main part of the mansion and was used as the harem (women's quarters). As the original text states: "The mansion that witnessed the unfortunate lives of Fatma Sultan, who was confined to this mansion until the end of her life, and Mediha Sultan, who had to leave her mansion and go to France," it also reveals the trials of Ottoman women with the public sphere, tradition, and the changing world order.

Political Significance: The Baltalimanı Treaties

The Mediha Sultan Mansion also holds great importance for Ottoman diplomatic history. The structure hosted many international agreements in the 19th century. These agreements, in chronological order, are:

• 1838 – The Baltalimanı Treaty with England
• 1839 – Treaty with Belgium
• 1840 – Treaty with France
• 1846 – Treaty with Russia These agreements, especially the 1838 Baltalimanı Commercial Treaty, played a key role in opening the Ottoman economy to the outside world and consolidating England's commercial dominance in Ottoman territories.

The Republican Era and the Auction

After the proclamation of the Republic, the mansion remained empty for a long time before being transferred to the Institute of Fisheries. The most striking loss of the mansion during this period occurred in a large auction held in January 1925. Extremely valuable belongings of Mediha Sultan and Damat Ferid Pasha, including furniture, rare paintings, and a rich library, were sold at public auction. This auction led to the dispersal of many works belonging to Ottoman court culture.

The Garden and Lost Elements

In the mansion's garden, there was once a very interesting pool. This pool was filled with seawater coming from its foundation and was used as a sea bath. Unfortunately, this pool has not survived to the present day. Over time, many parts of the mansion have disappeared:

• Two of the mansion's four outer gates have been closed.
• The ruined imperial pavilion in the garden was demolished.
• The bathhouse on the rear slope was destroyed during the construction of the coastal road.
• The auxiliary buildings, kitchens, and the harem agha's room in the garden also completely vanished during the same road construction.

The Mirrored Sofa: The Heart of the Mansion

The sofa (hall) located in the middle of the first floor of the two-story mansion is the most striking space of the structure. The walls here are completely covered with mirrors, creating an illusion of infinite expanse. Marble cladding was placed inside the mirrored sofa. This space is a concrete example of both the effort to expand spatial perception in Ottoman palace architecture and the aesthetic understanding of the Westernization period.

Current Use and Conservation Issues

Today, the mansion functionally serves two different institutions:

• The Harem section – Used as the Baltalimanı Bone Hospital.
• The Selamlık section – Serves as Istanbul University Social Facilities. Unfortunately, as the text emphasizes: "The original architecture of the building is currently completely destroyed." This statement points to the biggest problem regarding the preservation of the structure. Although the mansion continues to be used for functions such as a hospital and university facility, its historical fabric has been largely damaged.