In 1787, in the Count of Floridablanca of Charles III of Spain, the Prime Minister gave the order for the construction of such a quarantine station or Lazareto in the Harbour of Mahón. However, the work did not begin until 1793 when the stone from the ruined fortress was put to good use and ferried across the harbour by boat to be recycled and used for much of the construction of the quarantine station. This work was then interrupted by the third British occupation of 1798-1802, but completed in 1807. The Lazareto was finally opened in 1817 and was in full use until 1917.
The historic islet of Lazareto in Mahon Harbour is today open to the pubic for guided tours from mid-July to mid-October.
References: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.