A visit to Jaipur is incomplete without a visit ... of astronomical instruments and the world’s biggest sundial. Jantar Mantar is a UNESCO World Heritage site and is a must-visit for all history ...

The sundial works by casting the shadow of the gnomon (a reflection of the celestial north-south meridian) on the two quadrants (a reflection of the equatorial plane) hour by hour, minute by minute.

In Jaipur, in northern India, the pink hues of the facades shimmer in the haze of the Rajasthani sun. From majestic palaces ...