The Temple of Augustus is a well-preserved Roman temple in the city of Pula. Dedicated to the first Roman emperor, Augustus, it was probably built during the emperor's lifetime at some point between 27 BC and his death in AD 14. It was built on a podium with a tetrastyle prostyle porch of Corinthian columns and measures about 8 by 17.3 m, and 14 m high. The richly decorated frieze is similar to that of a somewhat larger and more recent temple, the Maison Carrée in Nîmes, France. These two temples are considered the two best complete Roman monuments outside Italy.
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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.