I normally fast travel to the City's Stables then walk into the city from there, but I just couldn't find how to quickly get into Solitude from its Stables. When I arrived at the Stables, there were NO GATES nearby, just a path that leads me to Docks. The only way I could get in was through some Ghetto Wooden Passage near a Lake where I pop up in some Tower. Once inside, I tried going to the Blue Castle because I thought that's where the Main Gate is, But it's NOT? It's a freaking HILL with no Gates? Then I dragged myself to another end of the city which is next to high mountains and shouldn't have any entrance and found it's also some kind of Castle? ARE there 2 Castles in this city? The city is just so confusing. What's wrong with it? #$%@#!$%!$#!@
