Jantar Mantar

Overview

An 18th-century astronomical observation site in central Delhi, one of five built by Maharaja Sawai Jai Singh II. Its 13 massive masonry instruments were used to measure time, predict eclipses, and track celestial bodies.

Highlights

• Samrat Yantra: A sundial accurate to half a second, the largest instrument in the complex.
• Ram Yantra: A cylindrical structure for measuring the altitude and azimuth of celestial objects.
• Misra Yantra: A hybrid instrument combining four sub-instruments, unique to the Delhi observatory.

History

Built in 1724 by Jai Singh II, the observatory was part of a network of five (the most famous being in Jaipur). Declared a protected monument in 1948, it sits on Sansad Marg near Connaught Place.

Visitor Tips

• Guide recommended: The instruments are hard to understand without explanation.
• Quick visit: The site is compact; 30–45 minutes suffices.
• Duration: 30–45 minutes.