Fire/Ice Temple: one temple with two elements.
Hell Temple: a mix of shadow and fire.
Sound Temple: well a temple about sound emitting things, maybe a piano thing... idk.
Temple of Order: Everything very straight with 90 degrees angles.
Temple of Chaos: A bunch of things that don't make sense like floor and roof upside down, no doors. Crazy stuff.
Death Temple or Skull Temple: made out of bones and ashes.
Blood Temple: Execution machines, dead bodies as rivers made out of blood.
I just thought I'd show you what I did with the interior of your poison temple design.
I repoursed the tower map from the premade towers and made it more poison swampy for the lower level. I cut the very awesome skull arches to use inside and did a little editing to chnge things up a bit. I hope you like, just thought you'd like to see.