The Hungarian Parliament Building (Országház in Hungarian) is a stunning neo-Gothic building on the banks of the Danube, and one of the easiest landmarks to spot in Budapest. Built between 1885 and 1904, the building is the meeting place of the National Assembly and also houses the Holy Crown of Hungary. Guided tours are available daily, and it’s best to book in advance to make sure you get a spot on a tour in your preferred language.