Jantar Mantar

Jantar Mantar is a collection of large, precise astronomical instruments built in India during the 18th century, primarily to observe celestial bodies and measure time. Designed by Maharaja Jai Singh II, these structures include stone and brass devices that track the sun, moon, planets, and stars, allowing astronomers of the time to study planetary movements and calendar calculations. They serve both as scientific tools and architectural marvels, demonstrating advanced astronomy knowledge. Today, Jantar Mantar is a UNESCO World Heritage Site, highlighting its historical significance and innovative design in the history of astronomy.