Siddharthanagar (Nepali: सिद्धार्थनगर), formerly and colloquially still called Bhairahawa (Nepali: भैरहवा), is a municipality and the administrative headquarter of Rupandehi District in Lumbini Province of Nepal, 265 km west of Nepal's capital Kathmandu. It is the closest city to Lumbini, the birthplace of Gautama Buddha, which is located 25 km to the west. The city borders the Indian city of Sonauli in Maharajganj district of Uttar Pradesh.