Neither Germany in particular nor Europe in general suffer from a lack of WH-listed cathedrals, but the one in Speyer was one of the first on the list, and for good reason: it is the largest remaining Romanesque church (after the destruction of Cluny Abbey during the French Revolution), and really seems much too big for the relatively small town of Speyer. It was Emperor Conrad II.'s goal to build the largest church in Christendom, but why this location was chosen is not really known. Today it is mostly famous for being the burial place of a series of emperors and kings from the Salian, Staufer, and Habsburg dynasties, and the Imperial Crypt is still the most impressive part of the cathedral. The Imperial Hall above the entrance was to me not so impressive, but in general, this is a great site and an easy, worthwhile visit.