Erbil Citadel, also known as the Citadel of Erbil, is a fortified historic settlement located in the center of the city of Erbil in the Kurdistan Region of Iraq. It has been inhabited for over 5,000 years, making it one of the oldest continuously inhabited cities in the world.

The citadel is located on a 30-meter-high mound, which was formed by the accumulation of layers of debris from successive civilizations that built their cities on top of each other. The current citadel was built during the Abbasid period in the 8th century CE, but it has been extensively restored and renovated over the centuries.

The citadel has a unique architectural style that reflects the diverse cultural influences that have shaped the city over the centuries, including Islamic, Persian, and Ottoman styles. The buildings are made of mud bricks and feature distinctive arches, domes, and intricate tilework.

In 2014, the citadel was recognized as a UNESCO World Heritage site, as it represents a remarkable example of urban continuity, cultural diversity, and architectural heritage. The site has also undergone significant restoration and preservation efforts in recent years to ensure its survival for future generations. Today, the citadel is a popular tourist attraction and a symbol of the rich cultural heritage of the Kurdistan Region of Iraq.