Lisbon is a city best explored on foot and by tram, so a short visit should prioritize a compact set of unmissable sights. Start in Belém, where the Belém Tower and the Jerónimos Monastery showcase the Manueline style born from the Age of Discoveries. In the historic core, Castelo de São Jorge offers sweeping views while Praça do Comércio opens onto the Tagus river. Riding Tram 28 through the narrow lanes of Alfama and Bairro Alto, then catching a live Fado performance in the evening, captures the city's soul, and a day trip to Sintra rounds out the essentials with its fairy-tale palaces just outside town.