To the left is the Scott Museum. Next to it in the picture (but well behind it) is the Balmoral Hotel. Then there is the North Bridge that crosses over the valley. Waverly Station is under the bridge.
https://en.wikipedia.org/wiki/Princes_Street_Gardens
https://en.wikipedia.org/wiki/Balmoral_Hotel
https://en.wikipedia.org/wiki/North_Bridge,_Edinburgh
https://en.wikipedia.org/wiki/Edinburgh_Waverley_railway_station