Ruins of the Adhai-din-ka-Jhonpra mosque is an imposing structure located in Ajmer, in the Indian state of Rajasthan.
The structure is basically the remains of one among the oldest mosques in the country and is Ajmer's oldest surviving monument. It stands testimony to Indo-Islamic architecture. Built in 1199 CE, the structure functioned as a mosque till 1947. After India's independence from the British, the building came under the management of ASI (Archaeological Survey of India).
Currently, it's visited by all kinds of people, irrespective of faith and religion, and is viewed as an excellent fusion of Indian, Muslim, Hindu, and Jain architectures.