The Batman River is a major tributary of the Tigris, joining it near the source of Tigris called Dicle River in southeast Turkey. It originates in the Anti-Taurus Mountains (at the Sason and Genç mountains) and flows approximately from north to south, passing near the city of Batman and forming a natural border between the Batman Province and Diyarbakır Province.
It’s also a city and a province.
Just thought you should know. I seriously doubt that the town has anything related to Bruce Wayne, so if you’re going to attempt “Batman tourism,” please don’t be a douche about it.
Photo credit: ‘Batman, Turkey’ by Bryce Edwards [CC-BY-2.0], via Wikimedia Commons.