Usually the Italian preposition in means "in" in English, but it can also mean "to" or "by"! The preposition in is used in the following cases.

1. To express the idea of going somewhere or staying somewhere (with countries, continents, regions, large islands, and addresses):

Vado in Italia. (I am going to Italy.)

Vado nella Sicilia. (I am going to Sicily.)

Abita in Germania. (He/she lives in Germany.)

Roma è in Italia. (Rome is in Italy.)