Stayed at a lovely resort west of Lisbon, Cascais, well-served by buses and trains, enabling us to get to Sintra and Lisbon from just outside the Cascais Orbitur campsite entrance.
Loved both Sintra and Lisbon. Photos say it all.
A snapshot of magical Sintra where we did the recommended climb, and it is indeed a climb!, through the gardens of the Villa Sassetti to the palace. Needs another visit to see more.
Villa Sassetti 
Palace de Pena 
Courtyard in Palace
Got the bus, then train from Cascais to Lisbon; took one of the iconic old trams around some of the old city centre streets. Again, a lovely city; the first two photos are of Cascais:
My favourite colour 
All looks absolutely charming x