finished in 1874. The building was called "Vámház" (Customs House) and "Fővámpalota" (Chief Customs Palace). This is also the name of the nearby avenue. The building was connected to ports of the Danube by four tunnels. It had a railroad connection. During WW2 the Hungarian, German and Soviet troops used the building as a military base. The Customs House suffered serious damage during the war. In 1948 it became the main building of the University of Economics. It underwent major renovations in 1950 and later in 1989–1990. Much of the education of the business faculties (Faculty of Business Administration, Economics, Social Sciences) takes place in the main building. This is the location of the rector's offices as well. The university's Közraktár Street building was completed in 2007. It offers of floor space, which includes an office building and education areas. The building has community areas, and hosts the 450-seat central library of the university which contains 100,000 books and journals. Research The Regional Centre for Energy Policy Research was established in 2004. The three main pillars of the Research Centre are education, research and consultancy. Their analysis focuses mainly on electricity and natural gas markets. They have been working on water management issues since 2007 and on transport issues since 2017. In 2018, the Corvinus Institute for Advanced Studies (CIAS), an international research centre, was established to strengthen Corvinus' scientific performance and international embeddedness. There are more than 20 research centres operating besides them at the university. Several research-related journals (Society and Economy, Vezetéstudomány [Management], Corvinus Journal of Sociology and Social Policy, Corvinus Journal of International Affairs, and Köz-Gazdaság [Public Economy]) and publications (e.g. workshop series: Corvinus Economic Working Papers RePEc, and Corvinus Law Papers) are published by the university. Doctoral schools At Corvinus University of Budapest, doctoral studies currently cover seven fields of study: Doctoral School of Business and Management Doctoral School of Economics and Business Informatics Doctoral School of International Relations and Political Science Doctoral School of Sociology and Communication Science The majority of courses are taught in English due to the growing internationalisation process based on an increasing number of foreign students. Awards and rankings In 2010, Corvinus won the Higher Education Quality Award in the Higher Education Institutions category. Its business majors are not only among the leading universities in Hungary, but are also internationally recognised: the university was ranked first in the region in 2019