The district headquarter is situated in Yamunanagar.
Yamunanagar was formed as a new district of Haryana on 16 October, 1989. Earlier to that it was part of Ambala district. The river Yamuna forms its eastern boundary with the state of Uttar Pradesh.
Adi Badri, the distinction of being one of the eight cultural hubs chosen to be developed under the 'Resurgence of Saraswati Project with a view to protect and promote the cultural heritage of the country.
The site of Adi Badri, tehsil Bilaspur, Distt. Yamunanagar (Lat 30 27', Long. 77 27'E) is situated 20 kms North of Bilaspur and 2 Kms from the nearest village, Kathgarh. The site can be approached by a pucca macadamized road that turns northwards, at a distance of 5 kms from Ranjeetpur which is situated on Bilaspur-Ponta Sahib or Bilaspur-Nahan link road.
Culturally traditionally and spiritually the site of Adi Badri is the most eminent place being the 'Udgam Sthal of river Saraswati' i.e the place where the trace is evident of the descends from Shivalik hills to the plains of Haryana of river Saraswati. Thus creating a parlance with Haridwar where Ganga descends to plains from Himalayas.
Padma Puran (Ch. 133) mentions Adi Badri to be Saraswattirth. It appears this sanctity and religious importance to Adi Badri has also been assigned on account of its being located in the confluence of river Somb and Saraswati thus forming the Saraswati-Somb Prayag, which is considered to be sacred tirtha for Tirtha-snana, Pind-Dan and other ritualistic activities (Mahabharata 83,151;84,66). On this place there existed a forest sacred to Ambica known as Ambicavan. (Bhagvat Puran, X, 34.1-18). Presently this site accords a picturesque setting, abundant with naturally beauty and tranquility, with the Adi Badri Narayana, Sri Kedarnath and Mantra Devi temples along with few religious sculptures and architectural members confirming the continuance of Shakta, Shaiva and Vaishnava traditions of the site to which our recent archaeological excavations have added the Buddhist dimension as well, by, unearthing a 'shririka stupa' and a highly developed Buddhist monastery.