While you can technically "hop on and off" Lisbon’s famous Tram 28, it is not a dedicated "Hop-On, Hop-Off" tourist bus, and doing so can be quite difficult in practice. Tram 28 is a regular part of the city's public transport network (Carris). If you have a 24-hour unlimited transit pass (the "Viva Viagem" or "Navegante" card), you can get off at a stop like the Sé Cathedral or the Portas do Sol viewpoint and board a later tram without paying extra. However, because Tram 28 is incredibly popular, it is almost always completely full. If you get off mid-route, you may find yourself waiting for several subsequent trams before one arrives with enough space to let you back on, especially during peak hours in 2026. For the best experience, most travelers recommend riding it from the start at Martim Moniz to get a seat, then getting off at your final destination. If you truly want to explore the Alfama district by hopping on and off frequently, you might be better served by the red or yellow "tourist" trams which are more expensive but far less crowded.