One day
Take an early train from Lisbon into Sintra and get ahead of the crowd: from the station, ride the 434 bus straight up to the Pena Palace before mid-morning, walk its park, then cross the ridge to the Moorish Castle for the ramparts and the valley view. Drop back down to Sintra-Vila for a travesseiro under the National Palace's twin chimneys, then walk west to Quinta da Regaleira for the Initiation Well before the queue builds. If there's light left, take the 435 out to Monserrate for its quiet gardens, then head back to the station.
