What is your favorite activity when you travel around the world?
Tough question. I guess, doing a bit of everything is maybe the best compromise. Relax on the beach, reading your book after a crasy session of kitesurfing in the water? Exploring the beauty that mother nature can offers? Climbing up these high summits to sit down and observe the world passing through could be another one, unless you prefer exploring the depth of the ocean and making dolphins and sharks your friends.
Finally, you just want to visit all the cultural aspect that any vibrant city can offer you: museum, exposition, historical buildings and sites where important events happened in the past.