Why visit Budapest
Budapest began as three separate towns, Buda and Óbuda on the hilly west bank and Pest on the flat east bank, unified in 1873 into a single capital split by the Danube. UNESCO lists the riverbanks, the Buda Castle Quarter and Andrássy Avenue together, a stretch of medieval, Baroque and grand nineteenth century architecture matched by few other capitals.
Neighbourhoods to know
Castle Hill in Buda keeps the palace, Fisherman's Bastion and Matthias Church above the river. Across the water, the Belváros forms Pest's historic core around Vörösmarty tér and the basilica. Erzsébetváros, the old Jewish Quarter, mixes the Dohány Street Synagogue with ruin bars inside crumbling courtyards, and Andrássy Avenue runs from the centre past the Opera House out to Heroes' Square and City Park.
When to go and for how long
April to May and September to October bring mild weather and thinner crowds than the summer peak. Three to four full days cover the main sights on both sides of the river without rushing, with a half day free for a thermal bath or a slower loop of City Park.
Getting around
Four metro lines cross the centre, including the M1, continental Europe's oldest underground railway, running beneath Andrássy Avenue since 1896. Trams follow the river on both banks, the funicular climbs Castle Hill from Clark Ádám tér by the Chain Bridge, and walking covers most of central Pest and Castle Hill on foot.