Start each Lisbon day at the top of a hill and walk down

Day 1: Castelo de São Jorge at opening, then downhill through Alfama

Day 1 ends with sunset at Senhora do Monte, the highest viewpoint

Day 2: Belém early, Jerónimos first, the tower from outside

Day 3: São Pedro de Alcântara, Príncipe Real, Chiado, then Baixa

Day 4: Sintra, an early train from Rossio, two palaces, not three

One, two and five-day versions are in the full itinerary