The Serbian Orthodox church in Trebinje was built between 1888 and 1908. The Hercegovačka Gračanica monastery, a loose copy of the Gračanica monastery in Kosovo, was completed in 2000. The churches are located above the city, on the historic Crkvina Hill. The 15th-century Tvrdoš monastery is located two kilometres southwest of Trebinje, including a church that dates back to late antiquity. There is also the Roman Catholic Cathedral of the Birth of Mary in the town center, as well as monuments dedicated to acclaimed poets Njegoš and Jovan Dučić (who was from the town). The Osman-Paša Resulbegović mosque, located in the Old Town, was originally built in 1726 and fully renovated in 2005. The Old Town walls are well preserved. The Arslanagić Bridge (1574) is located 1 km north of the town center.
