Tallinn Town Hall, located in the main square, is the only surviving Gothic town hall in Northern Europe. The first recorded mention of the Town Hall dates from 1322. Its present form dates from 1402-1404, when the building was rebuilt. The spire was destroyed in an aerial bombing on March 9, 1944. It was rebuilt in 1950. The Town Hall is in the list of UNESCO World Heritage Sites with the Tallinn's Old Town.
The building has two main storeys and an almost full-sized cellar. The main façade is supported by an open arcade with eight piers and topped by a crenellated parapet. High gables and a pitched roof make the building elegant, but the slender octagonal projecting tower with a gallery for bells gives it particular finesse. The tower is crowned by a late Renaissance spire comprising three cupolas and open galleries.
Today the Town Hall is a representative building of Tallinn City Government, concert hall and museum. The entire building is open to the public in July and August, when less official receptions are held. In other times, visits must be agreed with the Town Hall in advance (except the cellar exhibition).
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.