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 Metro in a limited state, with the gates opening as one approaches. Ticket validators have been installed on a bus and at the terminus of line H6, but are not being used. Lines run from approximately 04:30 to 23:30 every day, though times vary slightly between lines. The Budapest Metro is completely electrified and standard gauge in operation. Three different types of rolling stock are currently in service: Budapest Metro The Budapest Metro () is the rapid transit system in the Hungarian capital Budapest. It is the oldest electrified underground railway system on the European continent, and the third-oldest electrically operated