Lisbon on a weekend
Did a walking tour followed by a walk up to the highest point in Lisbon and a night of Fado. The next day, went to Sintra and the west-most point in continental Europe. I'm personally a more active traveler and this was a great trip.
Insider Tip:At Sintra, if you're not as interested in museums and how the rich live, spend more time at Quinta de la Regaleira (spelling?). The Pena Palace is nice but not very exciting. Cabe de Roca is about an hour away from downtown Sintra. Do not listen to anyone who says it is just 15 minutes away.