Fernweh

i think it's quite interesting, that there is no such word for the opposite of homesickness in english. in german, there is. it's called "Fernweh" there, what describes the longing for travelling, visiting other countries, the wish to go away, maybe to never come back.
 this is what i'm like at the moment.

this year, i am going to visit

• Prague, the capital and largest city of the Czech Republic
• Berlin, capital of Germany, again
• Rome, capital of Italy and the country's largest and most populated city

has anybody got some tips for, some "must-dos" in this cities?