I first read this trilogy half my life ago and it has been my favourite story ever since. While it could be described in part as science-fiction, its scope helps it transcend such tags. In fact, every sci-fi book you've read could well have taken place in the same world, thousands of years before the main events of this tale take place.
Set, obviously, at the very end of time, the world's tiny population benefits from the work of past civilizations. They have no idea how it works, but they can simply channel a great power that enables them to create whatever they like - houses, clothes, landscapes, creatures - and destroy them just as easily. This has resulted in nothing more than an endless succession of fads and fashions as people while away their endless, conscience-free days partying and gossiping, punctuated by the occasional arrival of time- and space-travellers.
When Jherek Carnelian
falls in love with an accidental visitor from Victorian England, a whole new series of ancient fashions sweeps the end of time while he attempts to make sense of this unusual emotion and track down his confused sweetheart.
The wondrous setting of the end of time and its ever-changing inhabitants and visitors would be entertaining enough, but the story is also deepened not only by the cross-century adventures and misunderstandings but also by the discovery of what it means to exist at the very end of time. In addition, those who have read some of Moorcock's other tales will find familiar time-travelling faces popping up on their way to or from other tales, which adds to the sense of a gloriously rounded and believable universe.