The Great Fire of 1660 was a catastrophic conflagration that broke out in Constantinople (modern-day Istanbul), capital of the Ottoman Empire, on July 24, 1660. The fire destroyed approximately two-thirds of the city over the course of about forty-nine hours.
Background
The fire began west of the Eminönü district and rapidly spread through densely populated neighborhoods characterized by closely packed wooden houses. Contemporary sources, including the Ottoman chronicler Abdi Paşa, reported that the blaze "marched across the city like an invading army." Estimates from the period indicate that roughly 280,000 homes were destroyed and approximately 40,000 people lost their lives. The fire also consumed at least 25 churches and 7 synagogues.
Aftermath and Consequences
The reconstruction of Constantinople following the fire marked a significant shift in Ottoman policy toward non-Muslim places of worship. Whereas previous Ottoman administrations had generally permitted the rebuilding of churches and synagogues after fires, a ban was issued after the 1660 fire forbidding their reconstruction.
The Kadızadeli preacher Vani Mehmet Efendi, who was invited to Constantinople by Grand Vizier Köprülü Fazıl Ahmed, argued that the disproportionate destruction of Jewish properties was a sign of divine displeasure. He supported legislation barring Jewish residents from returning to the affected areas. The grand vizier confiscated all lands where synagogues had stood and auctioned them, with non-Muslims forbidden from bidding. The Valide Sultan Hatice Turhan sponsored the completion of the Yeni Valide Mosque (New Mosque) on land cleared by the fire; it opened in 1665 with Vani Mehmet Efendi as its first preacher.
After some time, Christians were permitted to buy back land where churches had stood and rebuild them, though the rebuilt churches were officially registered as residential buildings.
The fire also contributed to a broader religious crackdown: upon Vani's advice, the sultan forbade the consumption of tobacco, coffee, and alcohol, insisted on strict enforcement of Islamic law, and suppressed Sufi institutions.
Scholarly Significance
The Great Fire of 1660 has been studied by historians as a pivotal event in the Islamization of Christian and Jewish space in Istanbul. Scholar Marc David Baer has examined how the fire and subsequent reconstruction policies were used to advance Islamic hegemony and consolidate Ottoman imperial authority in the city.
