Lisbon has no Eiffel Tower or Big Ben, no big "must see." Instead, it has a lot of "little sees" along with an enviable climate, an exquisite setting and a vibe that's easy to slip into and will be difficult to leave.
At least we have sampled some of its delights—ridden an old trolley, explored the narrow streets of the Alfama District, and climbed the ramparts of the Castle Sao Jorge. And we've saved some sights for later, too, whenever that later might be.
I'm hoping it's soon. I can already feel myself being pulled into Travel Mode, in which the mind is opened to the virtues of the peripatetic life. A few days in Lisbon will do it to you.