This is a novel of epic proportions.
I am not only referring to Kay's usual wordy and never-ending prose (or so it seems at times when you read it); I am also not simply alluding to the fact that the story is, as usual for Kay, epic (seriously, it's about how an entire peninsula and even two faraway kingdoms/empires are affected by the twenty-year toils of a few dedicated, passionate men who seek revenge over the tyrant who not only conquered their kingdom, but also bespelled it so that its true name, Tigana, could not be heard, written or in any way imparted to anyone who was not born there, so that its entire culture would be erased by the passage of time - ok I'll stop now.). I am also not just making a little joke about its 688-page (hardcover) length, or about the fact that the summary at the back literally refers to it as an "epic narrative that will change forever the boundaries of fantasy fiction."
I mean it literally: its proportions are impressive. This book is 13.5 cm (5.25 inches) wide, 22 cm (8.75") long, and an impressive 6 cm (2.25") thick. It is a real brick.
It was also a bit sluggish. And although I appreciated that there was a reference to Fionavar (the "original world" in Kay's mythology) in the legend of Finavir, it was just another detail amongst many others that could have been left out without losing anything of importance in the story.
A very long novel, great for when you have several months of vacation-time. Although I guess that if you only read one book at a time, this once could last for only two, maybe three weeks... An okay read.