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.
London, Neal's Yard, Covent Garden, a courtyard. It is named after the century developer, Thomas Neale. It now contains several health food cafes and new age retailers that are all painted in a variety of colors.