Line 1 (yellow): Runs under Andrássy Avenue from Vörösmarty Square to City Park. Historic line, small cars, stops every 500m. Use for: Hungarian State Opera, Heroes' Square, Széchenyi Baths.

Line 2 (red): Crosses the Danube. Pest side: Parliament, Great Market Hall. Buda side: Batthyány tér for Castle Hill funicular.

Line 3 (blue): North-south through Pest. Connects Nyugati and Keleti train stations. Use for: Central Market Hall (Kálvin tér stop).

Insider tip: Board middle cars on Line 2/3 during rush hour. Front and back cars are always packed. Line 1 cars are all the same size.