Jantar Mantar, Delhi

The observatory is also a very old building, with a lot of red paint falling off, and this building is not large, similar to an inverted heart-shaped structure, surrounded by new modern-style buildings in the city, and the whole visit cannot be accessed inside.

The city of Jaipur, the 18th century-built Jantamanta observatory, is still in use today. Jantar Mantar( Jantamanta) is the largest and most complete ancient observation deck built by Jay Singh in 1728. It has large and small sundials, telescopes and instruments to observe the sun, constellations, and zodiacs.

The Jantamanta Observatory in Jaipur, India, is the most important, comprehensive, and well preserved ancient observatory in India and is a UNESCO World Heritage Site. It is composed of 19 astronomical instruments with fixed installations as the main body. These astronomical instruments are immortal works of ancient observation devices known and have their own characteristics in many ways. The Samurai dice in the observatory is the world's largest stone dice. The word Janta Manta comes from Sanskrit. Literally means "computer of calculation." The Janta Manta Observatory was built during the reign of Savaj Jay Singh II and completed in 1738. It demonstrated the Indians' cosmos and ability to explore astronomy in the late Mughal era. The observatory is a masonry structure, while astronomical instruments are made of masonry and bronze. The observatory is a typical representation of Ptolemy-style positioning astronomy. The observatory also has a 12-constellation sculpture art park.

jantar Mantar is located in the modern city of New Delhi. “Jantar Mantar” it means “instruments for measuring the harmony of the heavens”. It consists of 13 architectural astronomy instruments

near center Delhi. Connaught palace. walkable distance from metro station. one time visit is okay

Surrounded by high-rise buildings in central Delhi, there is a strange orange-shaped complex, which was designed and built by Jaipur king Jay • Singh II, who loved astronomy and mathematics, three hundred years ago. Each instrument in the Jantamanta Observatory has its own special purpose, such as measuring the position, height and azimuth of stars, such as calculating eclipses. Here, two circles are seen in many lattices for measuring time, and are nearly 300 years old. There are also twelve small triangular buildings in the courtyard, representing twelve constellations, each of which is at the angle and direction of their respective constellations, which is very accurate and scientific.