Located in Delhi Qutub Minar is one of the UNESCO World Heritage Sites. With a height of 72.5 meters, the Qutub Minar is the tallest minaret in India. The construction was commenced by Qutb-ud-din Aibak in 1192 and completed by Iltutmish. It contains 379 stairs to reach the top. Being one of the most prominent examples of Indo-Islamic architecture, the minar is surrounded by several other ancient and medieval structures and ruins of the complex are collectively known as Qutub complex. The long standing Minar is a true example of Islamic architecture and is brilliantly constructed.