The Jantar Mantar in Jaipur, built by Maharaja Sawai Jai Singh II, is a remarkable 18th-century astronomical observatory. The observatory houses a collection of nineteen massive instruments designed to measure time, observe celestial bodies, and predict eclipses with exceptional accuracy. Made of stone and marble, each instrument exhibits innovative architectural design that blends functionality and beauty. Recognised as a UNESCO World Heritage Site, Jantar Mantar attracts tourists, students, and astronomy enthusiasts from around the world. Visitors can learn about ancient astronomical techniques while exploring instruments such as the Samrat Yantra, Jai Prakash Yantra, and Ram Yantra. The observatory offers a unique glimpse into the scientific knowledge and architectural prowess of 18th-century India, making it a must-see historical site in Jaipur.

Major Airports :

Jaipur International Airport (JAI)

Nearest Railway Station :

Jaipur Junction Railway Station (JP)

Jantar Mantar – Jaipur’s Astronomical Wonder

Located in the heart of Jaipur, right next to the City Palace, Jantar Mantar is a UNESCO World Heritage Site and one of the world’s most extraordinary astronomical observatories. Built in the early 18th century by Maharaja Sawai Jai Singh II, this marvellous site offers a unique blend of astronomy, architecture and mathematics. Jantar Mantar houses a series of massive instruments that were built to measure time, determine the position of planets and constellations and predict eclipses—in an era when modern instruments were not available.

Historical Significance

Completed in 1734, Jantar Mantar is one of the five observatories built by Maharaja Sawai Jai Singh II in India. Of these, the Jantar Mantar in Jaipur is the largest and best-preserved. The name “Jantar Mantar” is derived from the Sanskrit words “yantra” (instrument) and “mantra” (aphorism). This observatory reflects Maharaja Jai Singh's deep interest in astronomy and astrology and his desire to improve the time measurement system.

Architectural and Scientific Features

  • Samrat Yantra: The world's largest stone sun clock, which can measure time with an accuracy of 2 seconds.
  • Jai Prakash Yantra: Hemispherical instruments made to know the position of celestial bodies.
  • Ram Yantra: To measure the height and direction of the Sun and other planets.
  • Nadi Valay Yantra: Two circular structures, which tell the time from the shadow of the sun.
  • Apart from this, Chakra Yantra, Dakshin Bhita and many other instruments were made for complex calculations.
  • All these instruments have been built as permanent structures from local stone and marble, which have a wonderful combination of scientific accuracy and architectural beauty.

Timings and Fees

  • Opening hours: 9:00 am to 4:30 pm (daily)
  • Entry fee:
    • Indian tourists: ₹50 (adults), ₹15 (students)
    • Foreign tourists: ₹200 (adults), ₹100 (students)
  • Camera fee: ₹50 (stills), ₹200 (videos)

Things to Do

  • Understand how people used clocks in ancient times by watching the shadow of the Samrat Yantra.
  • Take a guided tour or use an audio guide to learn about each instrument in detail.
  • Read the educational boards at the observatory and learn interesting facts about astronomy.
  • Click memorable pictures amid the beautiful and symmetrical structures.
  • Also visit nearby sightseeing spots like the City Palace, Hawa Mahal and Govind Dev Ji Temple.

Facilities and Tips

  • Clean toilets and ticket counters are available at the entrance.
  • Certified guides are available in multiple languages at a nominal fee.
  • Morning is the best time to visit as the shadows are clearly visible then.
  • Carry water and use a hat or sunscreen to avoid the sun.
  • Wheelchair facility is limited as the flooring is old stone.

How to Get There

  • By road: Located in the City Palace complex, near Hawa Mahal and Tripolia Bazaar.
  • By rail: Jaipur Junction railway station (approx. 5.5 km)
  • By air: Jaipur International Airport (approx. 13 km)

Best Time to Visit

The best time to visit Jantar Mantar is from October to March when the weather is pleasant. It is best to go early in the morning or in the evening as the crowd is less and the shadows are clearly visible.

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