On to England! Big Ben - is the nickname of the Great Bell of the clock at the north end of the Palace of Westminister in London, England. Iconic and what England is most known for, so the Big Ben is a must see.
Vatican City, a city-state surrounded by Rome, Italy, is the headquarters of the Roman Catholic Church. It's home to the Pope and a trove of iconic art and architecture. It is so small that you can visit it in a day.