If you haven’t visited the Vatican in Rome, please be sure to add it to your list. Not only are the Vatican buildings, themselves, incredible, but the Vatican museum will blow your mind.
As you may know, the Vatican itself is an independent city-state and enclave located within Rome, Italy and it is a distinct territory under “full ownership, exclusive dominion, and sovereign authority and jurisdiction” of the Holy See.
With those ground rules understood, as you might expect,the Vatican also has its everyday requirements (water, electricity, post, etc.) But, it only has an area of 49 hectares (121 acres.) So why does it have a railway? See below, courtesy of HalfAsInteresting.com