The original idea for Hydropolis developed out of Hauser’s passion for water and the sea, and goes much deeper than just building a hotel underwater. More than just curiosity, it is a commitment to a more far-reaching philosophy. “Once you start digging deeper and deeper into the subject, you can’t help being fascinated and you start caring about all the associated issues,” he explains. “Humans consist of 80% water, the earth consists of 80% water; without water there is no life.” 
Hydropolis reproduces the human organism in an architectural design. There is a direct analogy between the physiology of man and the architecture. The geometrical element is a figure eight lying on its side and inscribed in a circle. The spaces created in the basin will contain function areas, such as restaurants, bars, meeting rooms and theme suites. These can be compared to the components of the human organism: the motor functions and the nervous and cardiovascular systems, with the central sinus knot representing the pulse of all life.
The ballroom, located at this nerve centre, will have asymmetrical pathways connecting the different floors along ramps. A large, petal-like retracting roof will enable the staging of open-sky events. Staircases, lifts and ramps will provide access to the ballroom, while flanking catering areas will supply banquets and receptions.In order to enter this surreal space, visitors will begin at the land station. This 120m woven, semicircular cylinder will arch over a multi-storey building. On the lowest level passengers aboard a noiseless train propelled by fully automated cable along a modular, self-supporting steel guideway to Hydropolis. A just-in-time and on-demand logistical system will facilitate efficient supply of goods to the hotel.
The upper floors of the land station house a variety of facilities, including a cosmetic surgical clinic, a marine biological research laboratory and conference facilities. On the lower levels are the staff rooms, goods storage and loading areas, and hotel and parking areas.The land station also includes a restaurant and high-tech cinema screening the evolution of life in the ocean and the history of underwater architecture. As a finale, the screen will open to reveal the real-life Hydropolis. A viewing platform at the front opening of the spanning roof will allow views of the architecture as well as the light shows of Hydropolis.
