Their next album is Subterranea. This is 1997. Again, you may be able to find a live verson of this lengthy work on-line, but find the CD if you can.
This is a monster piece of work, epic in content and very dark. And there is a feature film based on it!
You might think that, for a band that has been around so long, maybe they are running out of ideas, relying on the old stuff. Well, no, in concert they do a great mixture of old and new. But a recent (ish) album, The Road Of Bones (2014) is possibly one of their absolute best.
They have moved over to digital Mellotrons, which is a shame.
If this is your kind of music, then give IQ a listen. They tour regularly in the UK and on the continent, and are hugely popular in the Netherlands. Their Xmas show is legendary.