The Ancient Agora of Classical Athens is the best-known example of an ancient Greek agora (central public space in ancient Greek city-states), located to the northwest of the Acropolis and bounded on the south by the hill of the Areopagus and on the west by the hill known as the Agoraios Kolonos, also called Market Hill. The Agora's initial use was for a commercial, assembly, or residential gathering place.
Agora contains several remains of ancient temples and buildings. Temple of Hephaestus is one of the best-preserved Greek temples, built around 450 BCE. The excavations has uncovered most of the over 30 known major buildings from the Agora, along with thousands of artifacts. Conservation efforts have restored thousands of pieces of pottery and amphora (the standard storage vessel of the ancient world), studied thousands of marble statues and reliefs, and analyzed the remains of human and animal bones to give us a better understanding of what life was like in the ancient Athenian world.
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.