The 13th Sakyadhita International Conference on Buddhist Women was held in Vaishali (Bihar) India, January 5-12, 2013. Website of the Conference.
Vaishali, located near Patna, the capital of the Indian state of Bihar, possesses an incredibly rich past in the history of Buddhism. Vaishali is one of The Eight Great Places that were either identified specifically by the Buddha (Lumbini, Bodh Gaya, Sarnath, Kusinara) or are places where a certain miraculous event is reported to have occurred. Sravasti was the Place of the Twin Miracle, and also the place where the Buddha spent the largest amount of time, being a major city in ancient India. Rajgir, another major city in India, was the Place of the subduing of Nalagiri, the angry elephant, through friendliness. Sankasia was the Place of the descending to earth from Tusita heaven (after a stay of 3 months teaching his mother the Abhidhamma). And Vaishali was the Place of receiving an offering of honey from a monkey. Vaishali was the capital of the Vajjian Republic of ancient India.
For Buddhist women, Vaishali is twice notable. First Lord Buddha ordained the first woman, his stepmother and aunt, Mahaprajapati, at Vaishali. Second he delivered his last sermon at Vaishali and announced his Parinirvana there. Vaishali was also the venue for the second Buddhist Council a hundred years after his demise.
There is additional information about Vaishali and its Buddhist history on the Wikipedia page.