There are few cities quite so multi-layered as Dublin. Ireland’s capital has a history that dates all the way back to the Vikings, but perhaps its most prolific period was during the 18th century. Architectural remnants of these glory days are everywhere, from the stately Powerscourt House and Gardens to Merrion Square South. Part of the charm of Dublin cruises is stumbling upon these gems, as well as much older ones, such as St Patrick’s Cathedral and Dublin Castle, both of which date back to the 12th century. And of course, who could come to Dublin without sampling one of the many traditional pubs? You’ll find plenty of choice in the Temple Bar neighbourhood, which has an atmospheric feel thanks to its cobbled streets and riverside location. Sit back with a cold pint of Guinness while you enjoy live folk music as the sun goes down. Balance out all of that revelry with a visit to the 16th century Trinity College and its grand library, or the Old Library. It contains the revered Book of Kells, which contains the four gospels of the New Testament. Don’t miss the Long Room, which is the library’s decadent main hall, which is home to around 200,000 rare books.