Vienna is the country's capital, largest city, and one among nine states of Austria. Vienna is the country's most populous city which holds about 1.9 million inhabitants, nearly one third of the country's population. Also it stands as a cultural, economic, and political centre. It is the 7th-largest city by population within city limits within the European Union.
Vienna is one among the wealthiest regions in the European Region. The city of Vienna assigns major importance to science and research and focuses on creating an optimistic environment for research and development. Nearly 40,400 persons are employed in the R&D sector and 35% of Austria's R&D expenditures are invested in the city. With a research allocation of 3.4% Vienna exceeds the Austrian average of 2.77% and has already met the EU target of 3.0% by 2020.
Vienna has a widespread transportation network with a fused fare system that integrates municipal, regional and railway systems under the umbrella of the Verkehrsverbund Ost-Region (VOR). Public transport is provided by buses, trams and five underground metro lines (U-Bahn), most operated by the Wiener Linien. The railway system links Vienna with other European cities, like Munich, Venice, Budapest, Prague, Bratislava and Zurich.
The major tourist’s attractions in Vienna include The Hofburg, Schönbrunn Palace and Gardens, St. Stephen's Cathedral, Belvedere Palace, Vienna Zoo, The Prater and the Giant Ferris Wheel.
Therefore, Vienna is the most appropriate place to hold this gathering.