There are a few similarities between the geography of Rome, or Italy, and Greece, such as mountains, latitude and the Mediterranean Sea. Rome itself is bound by mountains on one side and the Mediterranean Sea on the other, typical geography for much of Greece.
According to How Stuff Works, Greece is a very mountainous country with little in the way of rolling plains. The Pindus Mountains and Rhodope Mountains cover much of the area. Italy has mountains as well. Although it has more plains then Greece, its mountains are not any less rugged, among which are the Alps and the Apennines.
Both Greece and Italy extend into the Mediterranean Sea and are fed by many different rivers. Rivers of note in Greece include the Akheloos, Pinios and Aliakmon. For Italy, important rivers include Tiber, Po, Adige and Reno.
Greece and Italy are also on the same latitude, which means that they share a similar climate. Both countries boast productive olive orchards and wineries due to this temperate climate. Both Greece and Italy have mild, rainy winters and hot, dry summers. Forests cover much of Greece and Italy, with trees ranging from oak, maple and chestnut to almond, fig and cypress.