Adhai Din Ka Jhonpra

Start with your feet. The stone underfoot is worn smooth and cool, even when the Ajmer sun is hard overhead. Ahead of you rises a tall screen of pale, honey-coloured stone, cut with deep arches. Pigeons move between the carvings. Behind it, the hills climb towards the old fort of Taragarh. You are standing in one of the oldest mosques in India, and one of the strangest in the stories it carries.

The name comes first, because it sounds like a riddle. Adhai Din Ka Jhonpra means 'the hut of two and a half days'. A grand stone mosque called a hut is a puzzle in itself. The two and a half days are a bigger one. Nobody can say for certain where the name came from, and the explanations are local stories, not documented history.

The most popular tale says the mosque was built in just two and a half days. That is a lovely image, but it cannot be literally true. A structure of this size and detail took years of work. Another explanation is more grounded. Some historians link the name to a fair lasting two and a half days, once held here by wandering Sufi mendicants. Either way, the name has stayed for centuries, and locals still use it.

Now look at the history behind the stone. Before this was a mosque, the site held an earlier building from the Chauhan period. The Chauhans were a Rajput dynasty who ruled this region in the twelfth century. Tradition says the earlier building was a Sanskrit college, linked to the Chauhan king Vigraharaja the Fourth. Inscribed stone slabs found at the site carry Sanskrit texts, including parts of a play, which supports the idea of a place of learning.

In the 1190s, the Chauhan kingdom fell to the armies of Muhammad of Ghor, who came from what is now Afghanistan. His general, Qutb-ud-Din Aibak, later became the first sultan of Delhi. Aibak ordered a mosque to be built here, using material from the older structures on and around the site. It belongs to the same early moment as the Quwwat-ul-Islam mosque in Delhi, near the Qutb Minar. Together, these two buildings mark the very beginning of Indo-Islamic architecture in north India.

Walk inside, under the roof, and look at the pillars. This is the first surprise most visitors miss. The pillars are not Islamic in style at all. They come from earlier Hindu and Jain temples. Many are stacked, one shaft placed on top of another, to reach the needed height. Their surfaces carry bells, chains, flowers and fine geometric bands. Look closely and you may notice places where figures were chipped away, because Islamic tradition avoids images of living beings in a mosque.

Now raise your eyes to the ceiling. Above the pillars, small domed sections are built from rings of stone. Each ring sits a little further inward than the one below it, until the gap closes at the top. This is called corbelling, and it is a technique from Indian temple building. Some of these ceilings carry detailed carved patterns. You are standing under a temple roof, inside a mosque. The two traditions meet right above your head.

Step back into the open court and turn to face the great screen. This was not part of the first building. It was added a few decades later, in the time of Sultan Iltutmish, who ruled Delhi after Aibak. The screen has seven arches, with the central arch rising highest. On top, you can still see the broken stumps of two small minarets. The screen gave the mosque a clear Islamic face, set in front of the older pillared hall.

Here is the second surprise. Look closely at the arches. They are not true arches, made of wedge-shaped stones that lock together. Instead, the builders laid flat stones in layers, each one stepping out a little, until the two sides met at the top. The local masons knew corbelling well, from temple work. The pointed arch was a new form they were asked to make. So they built a new shape with an old method, and the screen still stands.

Now follow the lines of carving across the screen. Bands of Arabic calligraphy run around the arches, mixed with geometric patterns and twisting floral designs. Some of the script uses an angular style called Kufic, named after the early Islamic city of Kufa. Other sections use more flowing letters. The calligraphy carries verses and inscriptions. Look at how evenly the bands are spaced. The carvers had to keep the text exact over curved and stepped surfaces, all by hand.

This place is not easy to read as one story. For some visitors, it is a record of conquest, with temple stones put to a new use. For others, it is a record of craftsmanship, with Indian masons shaping a new kind of building. Both are true at once. The stones themselves do not choose. They simply carry the marks of every set of hands that has worked on them, across more than eight centuries.

Much of the original complex is gone. Parts of the hall have collapsed over time, and the minarets on the screen are only stumps. What remains is protected today by the Archaeological Survey of India. Even in ruin, the proportions are clear. You can picture the full hall of pillars, filled with shade and the sound of prayer. In the late afternoon, the light comes in low, and the carvings throw long, sharp shadows.

The mosque sits in the old heart of Ajmer, a short walk from the Dargah of Khwaja Moinuddin Chishti. That shrine honours a Sufi saint, and it draws pilgrims from across South Asia. On the lanes between the two sites, you will hear the call of vendors, the hum of scooters, and qawwali music, which is devotional Sufi song. Rose petals, sweets and prayer caps fill the stalls. The old city and the old mosque feel closely joined.

Before you go, stand once more in the court and look up at the central arch. Notice the pale stone against the sky, and the pigeons settling into the carvings. Listen for the city just beyond the walls. As you walk back down the lane, look at the doorways and balconies around you. Some of them carry their own small carvings, and their own long stories, if you take a moment to stop.