Half-Day Around São Jorge Castle — Castle + Alfama Walk

Sample half-day

0:00–1:30 — Castle: ramparts, museum, towers.
1:30–2:30 — Descend to Alfama: Rua de São João da Praça, small cafés.
2:30 — Finish at Portas do Sol viewpoint for the river view.

Pace note: Keep an eye on tram schedules if you're returning by transit.