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Hastinapur is a very important place,both for Jains and Hindus.Its a pilgrimage for all.
The Hindu mythology related to this place is known to all...Thanks to Mr.B.R.Chopra....but the Jainism importance is known to few so I will concentrate on that.
Hastinapura was the capital of the kingdom of the Kauravas, belonging to the Kuru dynasty of kings. The throne of this city was the prize over which the Kurukshetra War of the epic Mahabharata was fought. All incidents in the epic Mahabharata have taken place in this city of Hastinapura. The first reference to Hastinapur in Hindu mythology comes as the capital of Emperor Bharata.
Now regarding Jainism,It is considered to be the Kashi of Jain Religion. According to the Jain manuscripts, Hastinapur was constructed by the Gods.
Starting from t + more about Hastinapur