If you are traveling to Florence, take some time to do day trips to the nearby villages such as Settignano and Fiesole. It's only 1 euro for a bus ride. While admiring the Tuscan hills, it is a great experience to go wine and oil tasting for a day.

If you find yourself in Italy, definitely see the major cities, but you cannot miss Cinque Terre. Get your hiking boots on because you will regret not wandering over the hills from village to village. It is simply spectacular there.

In Stockholm, Sweden, don't forget that the city is made up of many islands. Don't spend all your time exploring Old Town. Go explore the whole city.