In 1763 Russian Empress Catherine II ordered to fortify Tartu again. It was decided to build a gunpowder magazine (Püssirohukelder) in the former city moat. The responsibility of the building was assigned to Field-Marshal General de Villebois. His engineers started to build magazine in 1768. The bricks are brought from the old Mary Church (about where the University Main Building is now) and the ruins of the bishop settlement on Toome Hill demolished in 1708. The magazine completed in 1778.
Today Püssirohukelder offers Estonian and German dishes and has room for up to 300 people.
Reference: Püssirohukelder
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.