The Old City of Jerusalem is a historic and cultural district located in the heart of modern-day Jerusalem, Israel. It is one of the oldest cities in the world, with a history that dates back to the 4th millennium BCE. The Old City is a walled city that is divided into four quarters: the Muslim Quarter, the Christian Quarter, the Armenian Quarter, and the Jewish Quarter. It is a holy city for three of the world's major religions: Judaism, Christianity, and Islam.

The Old City is home to many of the most important religious and cultural sites in the world, including the Western Wall (also known as the Wailing Wall), the Church of the Holy Sepulchre, the Dome of the Rock, and the Al-Aqsa Mosque. These sites are considered to be some of the holiest places in the world, and are visited by millions of tourists and pilgrims each year.

In addition to its religious significance, the Old City is also known for its rich architectural heritage. The buildings and streets of the Old City are characterized by their narrow, winding alleys, stone-paved roads, and ornate arches and doorways. Many of the buildings in the Old City are made of stone, with intricate carvings and designs that have been preserved over the centuries.