Jantar Mantar Delhi

Jantar Mantar in Delhi is an 18th-century astronomical observatory built to measure time, predict celestial movements, and study astronomy — a marvel of Indian scientific heritage and architectural ingenuity. Despite centuries of wear, the site remains a symbol of India’s early contributions to science and astronomy.

Known for: Ancient astronomical instruments used for tracking stars, time, and planetary motion. A Blend of science, history, and architecture.

Restricted Items: Smoking, alcohol, drones and professional filming equipment (without prior approval).

More About: Constructed in 1724 by Maharaja Jai Singh II, Jantar Mantar is one of five observatories he built across India. This one in Delhi was designed for astronomical observations without the use of telescopes, using huge stone instruments calibrated with remarkable precision.

Architecture: Jantar Mantar consists of 13 architectural astronomical instruments. The most famous is the Samrat Yantra, a massive sundial that can measure time with an accuracy of about 2 seconds.

Best Time to Visit: October to March for pleasant weather.

Tips for Visiting: Be respectful — this is a heritage monument under ASI protection.