Take Pisa, for example. Not only is there so much more to see that its iconic leaning tower, but taking a day trip from Florence to Pisa, particularly with a knowledgeable guide, can only enhance a trip to Italy—without wasting valuable time.
If Pisa is on your must-do list, an afternoon tour of Pisa from Florence feels like nothing more strenuous than a stroll after lunch – but you'll be able to see all the sites and still be back in Florence in time for dinner. And with a private tour, you can even skip the line and climb up the Tower of Pisa!
If instead you're looking to efficiently visit more than one place (and have a full day on your itinerary), then a full day trip to Pisa and Lucca from Florence is the way to go. From the modern daily life lived around Pisa's historic monuments to the quiet, medieval vibe of Lucca, you'll have a wonderful overview of Tuscany's treasures.