In Dubai, there is a new housing project
that is essentially a custom built engineless boat.. with underwater views...
They call it "The worlds first floating home" (I know that is probably incredible news for all livaboards.....)
, 10 sold so far, 131 to be made....
Only 2.7M USD each !
This is one picture,
I wonder what it shall look like without constant bottom cleaning
The web site
says more about the project
(Actually appears to have several 'editions'. There is also a tzar edition.