The Kai Tak Cruise Terminal is capable of simultaneously berthing two super-liners with 4,000 passengers each. The building, which consists of a series of superposed, landscaped platforms on three levels, has been designed according to the principles of sustainable construction, with a focus on renewable energies: photovoltaic panels, thermal solar panels, etc. A collection system has been developed for rainwater which enables it to be recycled and used for watering the roof, which is entirely green.