This striking concept for a floating palace would feature swimming pools, a spa, a casino and landing space for two helicopters.
A New York-based design firm has envisioned a 360ft (110-metre) superyacht with a superstructure made of one-way glass.
The concept yacht, called Halcyon, would have the bells and whistles that billionaire owners have come to love and expect, but it would stand out from everything else on the water thanks to its unique shell.
On-board amenities would include his-and-hers saunas in the owner's suite, and two glass-bottom swimming pools, two infinity hot tubs, a casino and a spa that everyone would be able to access.
Designed for a private client by Gill Schmid Design, Halcyon explores the possibilities of using glass and glazing with a superstructure comprising floor-to-ceiling undulated glazing (a combination of white glass and reflective glass) to provide maximum privacy for the owner and guests.
The one-way glass would be transparent from the inside and opaque from the outside, with a monochrome effect.
Halcyon would have two glass-bottom swimming pools — one on the main deck and one on the upper deck — which would be connected by a waterfall flowing through a rectangular opening.
The design calls for louvered 'gill' glass doors on the main deck to create a deep inside and outside space around the main pool.
In addition to the owner's suite, the superyacht would have six guest and two VIP suites, allowing it to accommodate 18 people. It would also have quarters for 37 crew.
Other features include a front-facing formal dining area with panoramic views, a lounge and cocktail bar and retractable front-facing glass facade on the observatory deck, which has a helipad.
If a second helicopter has to land on the vessel, there is a retractable touch-and-go landing pad on the main deck between the two Jacuzzis.
An on-board garage has enough space to store tenders, an ICON plane or a mini submarine, said Gill Schmid Design.
The firm was founded by architects Alistair Gill, from the UK, and Veronika Schmid, who has split her time between Austria, Germany and the US.
Although the build cost was not revealed, a very rich owner would have to spend tens of millions of dollars to make the concept a reality.