Alai Darwaza is a grand gateway located in Delhi, India, built during the reign of Alauddin Khilji in the early 14th century. It serves as the entrance to the Qutb Complex, a UNESCO World Heritage Site. The structure is known for its impressive Indo-Islamic architecture, featuring intricate carvings and a large arched entrance. The gateway is made of red sandstone and adorned with beautiful white marble inlays. Its design reflects the architectural style of the time, showcasing a blend of Persian and Indian influences. Alai Darwaza stands as a significant historical monument, attracting visitors for its beauty and historical importance.