Great city did the hop-on hop-off bus to get the lay of the city. The Guinness Storehouse was amazing it was like the Google campus in CA on beer. 5 floors of great exhibits and beer tasting you could even learn how to pour a "perfect pint." We then walked around the pub area and visited the famous Temple Bar, criss-crossed the bridges and still had a little time for some fo the historical buildings.
The hop-on hop-off bus gave a very interested narrative on the political and cultural strift of the times from the perspective of a resident of Belfast. They take you to the wall, point our sites of heroism and cultural diversity, and they go past some historical landmarks. Really got a feel for the struggle that once tore Ireland apart.
Amazing. Get of the ship and walk to the Little Mermaid just to say you saw it. Walk in the opposite direction along the Nyhavn canal, up the longest shopping street in Europe (so they claim) and then to Tivoli gardens. Everyone said they were amazing but it is more than that, it is awesome! It is a world famous amusement park and gardens and restaurants dating from the mid-1800's. While there is an entrance fee it is worth every penny (don't get the amusement rides unless you have kids). Plan to spend several hours just walking around and maybe grabbing a meal. We stoped at a restaurant along the Nyhavn for a meal and it was great very authentic.
Wonderful city. The cruise ship shuttle bus drops you in town from there walk to the old city across the bridge onto the Royal Mile. If you plan to visit the castle get there early or else you will have a long line and eat up some of your day. If the line is to long stroll down the Royal Mile to the Queen's Palace of Holyroodhouse which is also interesting. Day 2 we took the hop-on hop-off bus just to fill in the historical gaps and a view (limited) of the new town. This is a must do walk about.