The Botanic Gardens of Belfast opened in 1828 as the private Royal Belfast Botanical Gardens. It continued as a private park for many years, only opening to members of the public on Sundays prior to 1895. Then it became a public park in 1895 when the Belfast Corporation bought the gardens from the Belfast Botanical and Horticultural Society.
Occupying 28 acres (110,000 m2) of south Belfast, the gardens are popular with office workers, students and tourists. The gardens' most notable feature is the Palm House conservatory. It was completed in 1840. It is one of the earliest examples of a curvilinear cast iron glasshouses in the world. The Palm House consists of two wings, the cool wing and the tropical wing. Lanyon altered his original plans to increase the height of the latter wing's dome, allowing for much taller plants. In the past these have included an 11 metre tall globe spear lily. The lily, which is native to Australia, finally bloomed in 2005 after a 23-year wait. The Palm House also features a 400-year-old Xanthorrhoea.
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.