Trebinje is the southern-most city in Bosnia and Herzegovina, lying on the Trebišnjica river. It is located in the Republika Srpska entity. There are several mills along the river, as well as an Ottoman stone bridge spanning it (Arslanagić bridge). There is a New Orthodox church in the town, whilst nearby is what is now an Episcopal church dating back from the 15th century nearby (Trvdoš Orthodox). The town largely escaped damage during the war, but some Muslim architecture was destroyed.