Translation of penitentiary in Spanish

For each entry, there will be the translations of the dictionary, so if one entry is already included there is no extra value in adding this word and I'd say mark it as an error although it is correct.
Please explain me the exact differences between British and American .... This year I'm trying to make the TOEFL. We can then discuss how we can prepare for this exam. I failed the first time.
Maybe you can tell me a little about yourself. My hobbies are reading, sports, meet with friends, but mostly I like to travel. I've been around the world ... in all the five continents.