Helsingin tuomiokirkko or Helsinki Cathedral was built by Carl Engel Lugvig under Russian administration in 1850. Renewed by Juha Leiviskä. In the early nineteenth century a fire destroyed much of the center of Helsinki and consequently began a rebuilding process under the rule of the Russian administration, which after centuries of disputes with Sweden had taken Duchy of Finland in 1808. An annexation would end in 1917 with the outbreak of the Bolshevik Revolution and the proclamation of the independence of Finland. The project includes the reconstruction of the new Senate Square and Lutheran Cathedral. The German architect Carl Ludvig Engel, assumed the command of the project and the construction of the library and the university also located in Senate Square. The new cathedral, erected in honor of Tsar Nicholas I, is located on the site of the little church Ulrika, in honor of the patron saint of Sweden, early S. XVIII. The original design was eminently neoclassical Engel and is based on a Greek cross, a central space with four arms of equal length. The result is a plant that repeats the same symmetrical facade and pediment colonnades on all four sides. The dome of green bronze roof was altered after the death of Engels in 1840, when Ernst Lohrmann take the lead and add four small domed towers on the sides and a bell and zinc statues of the apostles on the cover . The austere interior, the altar and the pulpit designed by Engel and the gloomy atmosphere generated under the dome of coffee. The crypt, which is accessed from a back street, was renovated in the 80 to host events and exhibitions by Vilhelm Helander and Juha Leiviskä. Helsingin tuomiokirkko or Helsinki Cathedral was built by Carl Engel Lugvig under Russian administration in 1850. Renewed by Juha Leiviskä. In the early nineteenth century a fire destroyed much of the center of Helsinki and consequently began a rebuilding process under the rule of the Russian administration, which after centuries of disputes with Sweden had taken Duchy of Finland in 1808. An annexation would end in 1917 with the outbreak of the Bolshevik Revolution and the proclamation of the independence of Finland. The project includes the reconstruction of the new Senate Square and Lutheran Cathedral. The German architect Carl Ludvig Engel, assumed the command of the project and the construction of the library and the university also located in Senate Square. The new cathedral, erected in honor of Tsar Nicholas I, is located on the site of the little church Ulrika, in honor of the patron saint of Sweden, early S. XVIII. The original design was eminently neoclassical Engel and is based on a Greek cross, a central space with four arms of equal length. The result is a plant that repeats the same symmetrical facade and pediment colonnades on all four sides. The dome of green bronze roof was altered after the death of Engels in 1840, when Ernst Lohrmann take the lead and add four small domed towers on the sides and a bell and zinc statues of the apostles on the cover . The austere interior, the altar and the pulpit designed by Engel and the gloomy atmosphere generated under the dome of coffee. The crypt, which is accessed from a back street, was renovated in the 80 to host events and exhibitions by Vilhelm Helander and Juha Leiviskä.