While Sintra is at the top of the list for Lisbon day tours, I highly recommend considering this if you have an extra day to tour. Evora was the morning stop, with the roman temple, chapel of bones, and cathedral. You can actually walk on the roof of the cathedral for some great views of the surrounding area. We continued to Monsaraz, near the border with Spain, to experience this old walled city in relative quiet. Lunch was there in a nice local restaurant (Xarez) with gorgeous views, followed by the wine tasting (Ervideira winery) with generous pours. Enjoy the ride back through Portugal's agricultural region ... maybe snooze a bit of the wine off too. :) Our guide (Alex) made the trip all the more enjoyable with good conversation and side notes.