London’s famous double-decker buses are not only a colorful attraction, but also a quick, convenient, and affordable way to explore the city and explore its streets adorned with palaces, museums, and monuments. Routes 9, 14, 15, and 22 are especially convenient for tourist purposes. Buses run throughout London around the clock, so you can schedule a trip at any time. It is important to remember that you can’t pay in cash on the bus, you’ll need either a transport card (Visitor Oyster Card, Oyster Card, Travelcard) or a contactless payment card.