Warsaw has an integrated public transport system (ZTM) covering the metro, trams, and buses. A single ticket covers all three modes and is valid for transfers within a time window. 24-hour and 72-hour tourist passes are good value if you're using the system frequently.
Metro: Two lines cross the city. Line 1 runs north-south through the centre and is the most useful; Line 2 runs east-west, connecting Praga to the western districts and stopping at the centre. The metro is clean, fast, and runs until around 1am.
Trams: Extensive tram network covering areas the metro doesn't reach. Route 4 from the Old Town area to Łazienki Park is a useful tourist route.
Taxis and ride-share: Uber and Bolt operate across Warsaw and are cheaper than traditional taxis. If using a conventional taxi, use the meter and choose a licensed company.
Cycling: Nextbike operates a city bike scheme with docking stations throughout central Warsaw and along the Vistula embankment. The riverside cycling paths are excellent.
Walking: The Old Town, Royal Route, and Powiśle districts are very walkable. The distances between the major sights are larger than they appear on the map — between the Old Town and Łazienki Park is about 4km.