The architectural ensemble of the Blagaj Tekke (a Sufi lodge) stands by the source of the Buna river, not far from the centre of Blagaj. The musafirhana (guest house) and türbe (mausoleum) are tucked into the natural surroundings, constituting a single entity with the cliffs, source of the Buna river and mills. The musafirhana of the Blagaj tekke and the türbe have been preserved to this day. The musafirhana was built before 1664, and rebuilt in 1851 - its original appearance is not known. The building was subsequently repaired on several occasions. The ensemble of the Blagaj Tekke was presumably built very soon after Ottoman rule was established in Herzegovina, around 1520 at the latest.
The Church of St Donatus name refers to Donatus of Zadar, who began construction on this church in the 9th century and ended it on the northeastern part of the Roman forum. It is the largest Pre-Romanesque building in Croatia.
The beginning of the building of the church was placed to the second half of the 8th century, and it is supposed to have been completed in the 9th century. The Zadar bishop and diplomat Donat (8th and 9th centuries) is credited with the building of the church. He led the representations of the Dalmatian cities to Constantinople and Charles the Great, which is why this church bears slight resemblance to Charlemagne's court chapels, especially the one in Aachen, and also to the Basilica of San Vitale in Ravenna. It belongs to the Pre-Romanesque architectural period.
The circular church, formerly domed, is 27 m high and is characterised by simplicity and technical primitivism.