The port city Liepaja had gained recognition in Europe and the world by World War I. On the coast of the Baltic Sea a resort developed, to which around 1880 a wide promenade – Kurhaus Avenue provided a functional link between the finance and trade centre in Old Liepaja. On November 8, 1890 the building conditions for Liepaja, developed according to the sample of Riga building regulations, were partly confirmed: the construction territory was divided into districts of wooden and stone buildings. In 1888 after the reconstruction of the trade canal Liepaja became the third most significant port in the Russian Empire. The railway (engineer Gavriil Semikolenov; 1879) and metal bridges (engineers Huten and Ruktesel; 1881) across the trade canal provided the link between Old Liepaja and the industrial territory in New Liepaja, where industrial companies and building of houses developed in the neighbourhood of the railway hub, but in spring 1899 the construction of a ten-kilometre long street electric railway line and power station was commenced. Since September 25 the tram movement provided a regular traffic between Naval Port (Latvian: Karosta), the residential and industrial districts in New Liepaja and the city centre in Old Liepaja. In 1907 the construction of the ambitious “Emperor Alexander’s III Military Port” and maritime fortress was completed, but already in the following year the fortress was closed. In the new military port there were based not only the navy squadrons of the Baltic Sea, but also the Pacific Ocean before sending them off in the war against Japan. The development of Liepaja continued: promenades, surrounded by Dutch linden trees, joined squares and parks in one united plantation system. On September 20, 1910 Liepaja City Council made a decision to close the New Market and start modernization of the city centre. In 1911 Liepaja obtained its symbol – the Rose Square. In the independent Republic of Latvia the implementation of the agrarian reform was started and the task to provide inhabitants with flats was set. Around 1927 in the Technical Department of Liepaja City the development of the master-plan was started: the territory of the city was divided into the industrial, commercial, residential and resort zone, which was greened. It was planned to lengthen Lord’s (Latvian: Kungu) Street with a dam, partly filling up Lake Liepaja in order to build the water-main and provide traffic with the eastern bank. The passed “Law of City Lands” and “Regulations for City Construction and Development of Construction Plans and Development Procedure” in Latvia Republic in 1928 promoted a gradual development of cities. In 1932 Liepaja received the radio transmitter. On the northern outskirts a sugar factory was built (architect Kārlis Bikše; 1933). The construction of the city centre was supplemented with the Latvian Society House (architect Kārlis Blauss and Valdis Zebauers; 1934-1935) and Army Economical Shop (architect Aleksandrs Racenis), as well as the building of a pawnshop and saving bank (architect Valdis Zebauers; 1936-1937). The hotel “Pēterpils”, which became the property of the municipality in 1936, was renamed as the “City Hotel” and it was rebuilt in 1938. In New Liepaja the Friendly Appeal Elementary school was built (architect Karlis Bikše), but in the Naval Officers Meeting House was restored and it was adapted for the needs of the Red Cross Bone Tuberculosis Sanatorium (architect Aleksandrs Klinklāvs; 1930-1939). The Soviet military power was restored in Latvia and it was included in the Union of Soviet Socialist Republics. During the World War II buildings in the city centre around the Rose Square and Great (Latvian: Lielā) Street were razed. When the war finished, the “Building Complex Scheme for 1946-1950” was developed for Liepaja. In August 1950 the city was announced as closed: the trade port was adapted to military needs. Neglecting the historical planning of the city, in 1952 the restoration of the city centre building was started, applying standard projects. The restoration of Liepaja City centre building carried out during the post-war period has not been studied. Research goal: analyse restoration proposals for Liepaja City centre building, destroyed during World War II, and the conception appropriate to the socialism ideology and further development of construction.
Bacteriohopanepolyols record stratification, nitrogen fixation and other biogeochemical perturbations in Holocene sediments of the central Baltic Sea