Mangla Gauri Temple, Gaya is a very old temple and finds mention in Padma Purana, Vayu Purana and Agni Purana.
The present temple structure dates back to 15th century. Mangala Gauri Temple is dedicated to Goddess Shakthi.
The temple also has idols of Maa Kali, Lord Ganesha, Lord Hanuman and Lord Shiva.
Web : http://en.wikipedia.org/wiki/Mangla_Gauri_Temple