From the 1460s to the completion of Dolmabahçe Palace in 1856, it served as the administrative center of the Ottoman Empire, and was the main residence of its sultans until the 17th century.

Construction, ordered by the Sultan Mehmed the Conqueror, began in 1459, six years after the conquest of Constantinople. Topkapı was originally called the “New Palace” (Yeni Saray or Saray-ı Cedîd-i Âmire) to distinguish it from the Old Palace (Eski Saray or Sarây-ı Atîk-i Âmire) in Beyazıt Square. It was given the name Topkapı, meaning Cannon Gate, in the 19th century.

The complex expanded over the centuries, with major renovations after the 1509 earthquake and the 1665 fire. The palace complex consists of four main courtyards and many smaller buildings. Female members of the Sultan’s family lived in the harem, and leading state officials, including the Grand Vizier, held meetings in the Imperial Council building.

After the 17th century, Topkapı gradually lost its importance. The sultans of that period preferred to spend more time in their new palaces along the Bosphorus. In 1856 Sultan Abdulmejid I decided to move the court to the newly built Dolmabahçe Palace. Topkapı retained some of its functions, including the imperial treasury, library and mint.

After the end of the Ottoman Empire in 1923, a government decree dated April 3, 1924 transformed Topkapı into a museum. Turkey’s Ministry of Culture and Tourism now administers the Topkapı Palace Museum. The palace complex has hundreds of rooms and chambers, but only the most important are accessible to the public as of 2020, including the Ottoman Imperial Harem and the treasury, called hazine where the Spoonmaker’s Diamond and the Topkapi Dagger are on display.

The museum collection also includes Ottoman clothing, weapons, armor, miniatures, religious relics, and illuminated manuscripts such as the Topkapi manuscript. Officials of the ministry as well as armed guards of the Turkish military guard the complex.

The Topkapı Palace forms a part the Historic Areas of Istanbul, a group of sites in Istanbul that UNESCO recognised as a World Heritage Site in 1985.

History

The palace complex is located on the Seraglio Point (Sarayburnu), a promontory overlooking the Golden Horn, where the Bosphorus Strait meets the Marmara Sea.

The terrain is hilly and the palace itself is located at one of the highest points close to the sea. During Greek and Byzantine times, the acropolis of the ancient Greek city of Byzantion stood here.

After Sultan Mehmed II’s conquest of Constantinople (known since 1930 in English as Istanbul) in 1453, the Great Palace of Constantinople was largely in ruins.

The Ottoman court was initially set up in the Old Palace (Eski Saray), today the site of Istanbul University in Beyazit Square. Mehmed II ordered that construction of Topkapı Palace begin in 1459. According to an account of the contemporary historian Critobulus of Imbros the sultan “took care to summon the very best workmen from everywhere – masons and stonecutters and carpenters … For he was constructing great edifices which were to be worth seeing and should in every respect vie with the greatest and best of the past.”[11] Accounts differ as to when construction of the inner core of the palace started and was finished. Critobulus gives the dates 1459–1465; other sources suggest construction was completed in the late 1460s.

Mehmed II established the basic layout of the palace. His private quarters would be located at the highest point of the promontory.

Various buildings and pavilions surrounded the innermost core and winded down the promontory towards the shores of the Bosphorus.[citation needed] The entire complex was surrounded by high walls, some of which date back to the Byzantine acropolis. This basic layout governed the pattern of future renovations and extensions. The layout and appearance of Topkapı Palace was unique amongst not only European travellers, but also Islamic or oriental palaces. European travellers described it as “irregular, asymmetric, non-axial, and un-monumental proportions”. Ottomans called it “The Palace of Felicity”.

A strict, ceremonial, codified daily life ensured imperial seclusion from the rest of world. One of the central tenets was the observation of silence in the inner courtyards. The principle of imperial seclusion is a tradition that was codified by Mehmed II in 1477 and 1481 in the Kanunname Code, which regulated the rank order of court officials, the administrative hierarchy, and protocol matters. This principle of increased seclusion over time was reflected in the construction style and arrangements of various halls and buildings.

The architects had to ensure that even within the palace, the sultan and his family could enjoy a maximum of privacy and discretion, making use of grilled windows and building secret passageways.

Later sultans made various modifications to the palace, though Mehmed II’s basic layout was mostly preserved. The palace was significantly expanded between 1520 and 1560, during the reign of Suleyman the Magnificent. The Ottoman Empire had expanded rapidly and Suleyman wanted his residence to reflect its growing power. The chief architect in this period was the Persian Alaüddin, also known as Acem Ali. He was also responsible for the expansion of the Harem.

In 1574, after a great fire destroyed the kitchens, Mimar Sinan was entrusted by Sultan Selim II to rebuild the damaged parts of the palace. Mimar Sinan restored and expanded not only the damaged areas, but also the Harem, baths, the Privy Chamber and various shoreline pavilions.

By the end of the 16th century, the palace had acquired its present appearance. The palace is an extensive complex rather than a single monolithic structure, with an assortment of low buildings constructed around courtyards, interconnected with galleries and passages. Few of the buildings exceed two stories.

Seen from above, the palace grounds are divided into four main courtyards and the harem. The first courtyard was the most accessible, while the fourth courtyard and the harem were the most inaccessible. Access to these courtyards was restricted by high walls and controlled with gates. Apart from the four to five main courtyards, various other small to mid-sized courtyards exist throughout the complex. Estimates of the total size of the complex varies from around 592,600 m2 (146.4 acres) to 700,000 m2 (173 acres).

To the west and south the complex is bordered by the large imperial flower park, known today as Gülhane Park. Various related buildings such as small summer palaces (kasır), pavilions, kiosks (köşk) and other structures for royal pleasures and functions formerly existed at the shore in an area known as the Fifth Courtyard, but have disappeared over time due to neglect and the construction of the shoreline railroad in the 19th century. The last remaining seashore structure that still exists today is the Basketmakers’ Kiosk, constructed in 1592 by Sultan Murad III.