The best way to experience Budapest is on foot, with plenty of espresso breaks, as you admire the city’s most notable buildings and charming neighborhoods. Start with a walk in Buda Castle and head down one of the staircases and towards the Danube. Cross the Chain Bridge to get to the heart of Pest. Walk north along the river to see the Shoes on the Danube Promenade Holocaust memorial, and the neo-Gothic Parliament, Hungary's largest building. Circle back south through Szabadság Tér Park, and then to St. Stephen’s Basilica, where you can climb to the dome for a beautiful view. Walk up tree-lined Andrássy út to see the Opera House, as well as plenty of old villas and cafés. End up at Heroes’ Square and City Park, among the city's top sights.