Jantar Mantar, New Delhi

E20130

astronomical observatory heritage monument tourist attraction

Jantar Mantar, New Delhi is an 18th-century astronomical observatory built by Maharaja Jai Singh II, featuring large masonry instruments used for precise naked-eye observations of celestial bodies.

Try in SPARQL Jump to: Surface forms Disambiguation Statements Elicitation Referenced by

All labels observed (9)

Label	Occurrences
Jantar Mantar, New Delhi canonical	8
Jantar Mantar, Delhi	5
Jantar Mantar observatory, New Delhi	2
Jantar Mantar grounds, New Delhi	1
Jantar Mantar observatory complex	1
Jantar Mantar observatory complex in Delhi	1
Jantar Mantar observatory complex, New Delhi	1
Jantar Mantar, Ujjain	1
Samrat Yantra	1

How this entity was disambiguated

This entity first appeared as the object of triple T152378 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Jantar Mantar, New Delhi
Context triple: [New Delhi, hasLandmark, Jantar Mantar, New Delhi]

A. Tara Mandir Planetarium
Tara Mandir Planetarium is a popular astronomical attraction in Porbandar, India, featuring educational shows and exhibits about space and celestial phenomena.
B. National Museum, New Delhi
The National Museum in New Delhi is one of India’s largest and most important museums, housing extensive collections that span 5,000 years of the subcontinent’s art, history, and cultural heritage.
C. Red Fort
The Red Fort is a historic 17th-century sandstone fortress in Delhi, India, that served as the main residence of Mughal emperors and now stands as a prominent symbol of India's heritage and independence.
D. Jama Masjid, Delhi
Jama Masjid, Delhi is one of India’s largest and most famous mosques, built in the 17th century under Mughal emperor Shah Jahan and renowned for its grand red sandstone and marble architecture.
E. Palace of Assembly, Chandigarh
The Palace of Assembly in Chandigarh is a landmark modernist government building in India, renowned for its bold concrete architecture and symbolic design by Swiss-French architect Le Corbusier.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Jantar Mantar, New Delhi
Target entity description: Jantar Mantar, New Delhi is an 18th-century astronomical observatory built by Maharaja Jai Singh II, featuring large masonry instruments used for precise naked-eye observations of celestial bodies.

A. Tara Mandir Planetarium
Tara Mandir Planetarium is a popular astronomical attraction in Porbandar, India, featuring educational shows and exhibits about space and celestial phenomena.
B. National Museum, New Delhi
The National Museum in New Delhi is one of India’s largest and most important museums, housing extensive collections that span 5,000 years of the subcontinent’s art, history, and cultural heritage.
C. Red Fort
The Red Fort is a historic 17th-century sandstone fortress in Delhi, India, that served as the main residence of Mughal emperors and now stands as a prominent symbol of India's heritage and independence.
D. Jama Masjid, Delhi
Jama Masjid, Delhi is one of India’s largest and most famous mosques, built in the 17th century under Mughal emperor Shah Jahan and renowned for its grand red sandstone and marble architecture.
E. Palace of Assembly, Chandigarh
The Palace of Assembly in Chandigarh is a landmark modernist government building in India, renowned for its bold concrete architecture and symbolic design by Swiss-French architect Le Corbusier.
F. None of above. chosen

Statements (49)

Predicate	Object
instanceOf	astronomical observatory ⓘ heritage monument ⓘ tourist attraction ⓘ
architecturalStyle	observatory architecture ⓘ
builder	Maharaja Jai Singh II ⓘ
city	New Delhi ⓘ linked to: New Delhi, India
commissionedBy	Maharaja Jai Singh II ⓘ
constructionEnd	1724 ⓘ
constructionStart	1721 ⓘ
coordinateSystem	altazimuth coordinates ⓘ equatorial coordinates ⓘ
country	India ⓘ
era	Mughal period ⓘ
hasPart	Dakshinottar Bhitti ⓘ Jai Prakash Yantra ⓘ linked to: Niyati Chakra Misra Yantra ⓘ Niyati Chakra ⓘ Rama Yantra ⓘ Samrat Yantra ⓘ linked to: Jantar Mantar, New Delhi Shanku Yantra ⓘ
heritageDesignation	protected monument of national importance in India ⓘ
inception	18th century ⓘ
locatedIn	Delhi ⓘ India ⓘ New Delhi ⓘ linked to: New Delhi, India
material	brick ⓘ masonry ⓘ stone ⓘ
near	Connaught Place ⓘ
notableFor	large-scale fixed masonry instruments ⓘ
observationMethod	naked-eye observation ⓘ
openToPublic	yes ⓘ
operator	Archaeological Survey of India ⓘ
partOf	series of Jantar Mantar observatories ⓘ
purpose	astrological calculations ⓘ astronomical observation ⓘ calendar calculations ⓘ time measurement ⓘ
region	National Capital Territory of Delhi ⓘ
relatedTo	Jantar Mantar, Jaipur ⓘ Jantar Mantar, Mathura ⓘ Jantar Mantar, Ujjain ⓘ linked to: Jantar Mantar, New Delhi Jantar Mantar, Varanasi ⓘ
significance	one of a series of observatories built by Jai Singh II ⓘ used for precise naked-eye observations of celestial bodies ⓘ
usedFor	determining declination of celestial objects ⓘ measuring local time ⓘ predicting eclipses ⓘ tracking positions of stars and planets ⓘ

How these facts were elicited

Referenced by (21)

Full triples — surface form annotated when it differs from this entity's canonical label.

New Delhi → hasLandmark → Jantar Mantar, New Delhi ⓘ

subject linked to: New Delhi, India

Jantar Mantar, New Delhi → hasPart → Samrat Yantra ⓘ