Princes Street is probably the most famous boulevard of the city. What is interesting about this street, is the fact that a large part of one side has no buildings and thus offers splendid views of the popular Princes Street Gardens and the famous Edinburgh Castle. There are also other interesting sights built along this street - such as Scott Monument and National Gallery of Scotland.
If you are visiting the UK for shopping, this is the place to go to. There are both ordinary shops and high-class boutiques. If you get hungry while enjoying a small shopping spree, there is also a number of restaurants to hop into.
Wikipedia https://en.wikipedia.org/wiki/Princes_Street
More information http://edinburgh.org/things-to-do/activities/shopping/
Address Princes St Edinburgh, UK
Coordinates 55°57'8.062" N -3°11'43.059" E