Budapest later, with the help of the Russian Empire. 1867 was the year of Reconciliation that brought about the birth of Austria-Hungary. This made Budapest the twin capital of a dual monarchy. It was this compromise which opened the second great phase of development in the history of Budapest, lasting until World War I. In 1849 the Chain Bridge linking Buda with Pest was opened as the first permanent bridge across the Danube and in 1873 Buda and Pest were officially merged with the third part, Óbuda (Old Buda), thus creating the new metropolis of Budapest. The dynamic Pest grew into
Budapest in the city, for instance deserve to mention the most well-known Prezi, LogMeIn or NNG. Budapest is the highest ranked Central and Eastern European city on Innovation Cities' Top 100 index. A good indicator of the city's potential for innovation and research also, is that the European Institute of Innovation and Technology chose Budapest for its headquarters, along with the UN, which Regional Representation for Central Europe office is in the city, responsible for UN operations in seven countries. Moreover, the global aspect of the city's research activity is shown through the establishment of the European Chinese Research Institute in