The weekend plan
Day one
Spend the morning and early afternoon at Royal Albert Dock, a UNESCO-recognised 19th-century warehouse complex now holding several museums under one roof: the Maritime Museum and the International Slavery Museum both use the city's shipping history directly, and neither shies away from the harder parts of it. Tate Liverpool sits in the same dock if contemporary art is more the mood. In the evening, head inland to the Baltic Triangle, a former industrial quarter now dense with independent bars and street food.
Day two
Start at the Cavern Quarter around Mathew Street, the streets where Liverpool's music scene actually happened before it became a heritage trail — the Cavern Club still operates on the site of the original venue. From there it's a straight walk up Hope Street, which connects the city's two cathedrals: the Anglican Cathedral, the largest cathedral building in Britain, and the Metropolitan Cathedral, a strikingly modern circular design finished in 1967. Finish with a last look at the waterfront before heading home.
What to see
The Three Graces — the Royal Liver Building, the Cunard Building and the Port of Liverpool Building — form the waterfront skyline that's defined the city's postcard view for over a century, and they're worth seeing lit up if the visit runs into an evening. Hope Street itself, connecting the two cathedrals, is one of the more unusual pieces of city planning in Britain: two enormous, completely different places of worship deliberately built to face each other from opposite ends of the same street.
A slower alternative: the Georgian Quarter
If the dock and Mathew Street both feel busy, the Georgian Quarter around Hope Street and Canning Street holds some of the city's quietest, best-preserved 18th-century terraces — a genuine change of pace a few minutes' walk from either of the main draws.
How to pace it
Albert Dock alone easily absorbs a full day if you try to properly see every museum inside it — pick one, maybe two, rather than attempting all of them plus the Cavern Quarter in a single day. The two halves of this weekend (waterfront history, music-and-cathedrals) work better as two separate days than as one crowded one.