The town lies on the small Trebišnjica river, and 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 (Tvrdoš Orthodox). Trebinje is also home to the small Catholic Cathedral of the Birth of Mary. The town largely escaped damage during the war, but some Muslim architecture was destroyed. The Mosque of Trebinje was rebuilt by the returned Muslim community and inaugurated in July 2005.
Trebinje is the seat of the Catholic Bishopric of Trebinje-Mrkan.
The local football club is FK Leotar Trebinje.
Chapi