Metro Line M4 (Budapest Metro) Metro Line M4 (Budapest Metro) Line 4 (officially: South Buda–Rákospalota (DBR) Line, Metro 4 or M4, and unofficially: Green Line), is the fourth line of the Budapest Metro. It opened on 28 March 2014. The first section, 7.4 km in length and consisting of ten stations, connects the southwestern Kelenföld vasútállomás located in Buda, and the eastern Keleti pályaudvar in Pest, under the River Danube. While three additional sections — one an eastern extension to Bosnyák tér, the second west to Virágpiac, and a third further east to Újpalota — have been planned, these remain unfunded by the Budapest city
Budapest host of 4 matches in the UEFA Euro 2020, which will be held in the 67,889-seat new multi-purpose Puskás Ferenc Stadium, to mention a few. In 2015 the Assembly of the Hungarian Olympic Committee and the Assembly of Budapest decided to bid for the 2024 Summer Olympics. Budapest has lost several bids to host the games, in 1916, 1920, 1936, 1944, and 1960 to Berlin, Antwerp, London, and Rome, respectively. The Hungarian Parliament also voted to support the bid on 28 January 2016, later Budapest City Council approved list of venues and Budapest became an official candidate for the 2024