Ancalagon
Dusty Dragon
Dungeons of Drakkenheim is an adventure centered and focused on the city of Drakkenheim itself.Is Drakkenheim as good as it looks? Those Canadian fellas have one of my favorite YT channels and I've been tempted to grab the setting
It is a very usable, well written campaign. Clearly a lot of thought was given to usability, much much more so than most WotC adventures. I very highly recommend it. It's not for a beginner GM, and it's not for every group, but for some it's A+ material.
It's formatted as a series of small/medium dungeons/adventures. Each adventure has 2-5 hooks, and an "aftermath" section - consequences of various outcomes of said adventures. So in theory, someone could buy the book and "extract" some of these dungeons and insert them in another campaign, but I feel the campaign itself has a lot of value.