In Budapest, one recommended way that you can simply ‘sight-see’ the downtown is by walking. You can walk to the famous Vörösmarty Square (Gerbeaud Coffeehouse) – travelling on the Millennium Underground line to the State Opera House (followed by an interior visit) – walking on the Andrássy Street passing by – ’Hungarian Broadway’ – House of Terror – Kodály Körönd, then you can take the metro to the Heroes’ Square – Szécheny Spa – walking through the City Park to the Vajdahunyad Castle (with an interior visit) – return by the Millennium Underground – and stop at the city centre.