In Tibia there's so many guildhalls and houses to pick from. Each one can be different from each other in various ways like size, amount of beds, amount of windows, etc. However, I'm looking for what a guildhall or house has that no other has. This could be a simple decoration that comes with house, a pool for example, etc.
For example, I know the Ivory Mansion in Liberty Bay has a beautiful arch which isn't seen in my knowledge in any other house:
Can you name some other unique guildhalls and houses and why their different?