About

Beyond the reach of any nation, on the high seas—there lies "Ark Lagoon," a massive semi-submersible mega-float complex that artificially recreates emerald green shallows. ### City Overview Rising only 12 meters above sea level, geometric structures composed of glass and white reinforced carbon link together like a small atoll surrounding a giant coral reef. It is a luxury city for the world's ultra-wealthy, entrepreneurs, and those fleeing the "crampedness of land." ### City Structure and Lifestyle - **Layer 1 (Upper Lagoon):** An area lined with overwater villas, private beaches, and Michelin-starred restaurants. In the artificial coves, where waves and temperatures are kept constant 24 hours a day, residents enjoy diving and windsurfing. - **Layer 2 (Under Sea):** Residential and commercial districts submerged below the surface. Covered by autonomous acrylic outer walls, guest rooms and dining areas offer views of natural tropical fish and submerged ruins of a bygone era. The underwater spa area, themed around "Silent Luxury," is a popular destination. - **Base Area (Core Engine):** The city's ballast section extending to a depth of 100 meters. It fully automates cooling systems via deep-sea water pumping, desalination plants, and wave/geothermal power (sourced from seafloor volcanoes). ### Main Facilities - **Grand Blue Plaza:** A 360-degree glass-walled main hall located 20 meters underwater. At night, it transforms into a club where bioluminescent microbes and projection mapping intersect. - **Solaris Tower:** The only skyscraper soaring at the center of the city. It serves as a tower for aggregating solar and wind power, and acts as the base for the city's governing body, the "Ark Council." ### Tourist Spot: Solaris Grand A 5-kilometer-long circular glass deck covering the outer edge of the city. Designed to be nearly level with the sea surface, it gives the sensation of walking on water. - **Sunset Terrace:** At dusk, parts of the deck submerge into the sea, transforming into a stunning bar area where waves brush against your feet. - **Drone Skyride:** A departure point for sightseeing activities where small air taxis provide a panoramic view of the city from above. ### Natural Areas **Neo-Atoll (Artificial Bio-Lagoon)** A massive artificial ecosystem reserve, 1 kilometer in diameter, located at the center of the mega-float. - **Micro Jungle:** A dome-shaped vegetation area recreating a tropical rainforest climate. It is lush with plants genetically modified to glow faintly at night. - **Symbiotic Coral Reef:** Fast-growing reinforced artificial coral and endangered marine life are protected and cultivated here. Entry is permitted only via diving tours. ### Aquarium Area: Abyss Panorama (Deep Sea Experience Aquarium) Unlike typical aquariums, this is a next-generation "wall-less" facility installed in the undersea section (30–50 meters deep). - **Reverse Aquarium:** Humans enter reinforced acrylic tubes to observe large wild marine life (sharks, mantas, whales, etc.) swimming in the open sea outside. - **Deep Sea Projection Theater:** Cameras and sonar are permanently stationed in the deep sea below the facility. The sight of creatures living at depths of 1,000 meters, usually invisible, is recreated as ultra-high-definition holograms. ### Cyber Data Dome (Undersea Data Center & Exhibition Hall) A portion of the latest ultra-high-speed data center, utilizing seawater cooling, is open to the public. It is an interactive digital art space visualizing all the city's systems. - **Data Fish Mapping:** Visualizes the city's cryptocurrency transactions and communication data as colorful "light fish." Visitors can observe and manipulate them as they swim in schools within the dome. - **Nereus Core (AI Dialogue Room):** The main server room for "Nereus," the city's marine conservation AI. Visitors can engage in direct dialogue or consult on data analysis with a 3D holographic AI avatar. ### Area Concept: Core Machinery (Layer 0) The city's ballast and power area extending to 100 meters deep. This massive space, where inorganic generators and cooling pipes are exposed, has been "gamified" by the city maintenance AI and entertainment corporations, opening it up as a cyber-industrial district for residents and tourists. ### Key Areas & Facilities - **Real Dungeon: Engine Room No. 3 (Former Drainage Plant)** An experience facility where city maintenance work itself has been turned into an AR (Augmented Reality) game. Participants equip gravity suits and laser tools to eliminate AI-generated "virus organisms" and "leak monsters" while performing actual pipe cleaning and inspection missions. Cryptocurrency is paid as a reward based on performance. - **Pipe Racers (Geothermal Pipeline Circuit)** A circuit dedicated to ultra-high-speed hoverbikes built in the gaps between massive cooling pipes for geothermal power generation. Racers dash at top speeds of 300 km/h through dangerous areas where steam bursts and giant fans rotate. Sensors lining the vehicle and track walls ensure safety by instantly switching to a simulation in the event of a crash. - **Gaming Control Tower (Central Control Room Observation Area)** A giant monitor room visualizing the city's energy distribution and desalination load status like a real-time simulation game screen. Visitors can challenge themselves as the "City Governor" for 10 minutes in a puzzle to optimize actual city resources. Achieving a high score earns rewards like overwater villa stay vouchers or access to exclusive VIP areas. - **Survival Ballast (Enclosed PvP Field)** A zero-gravity and submersible battle arena repurposed from the giant ballast tanks used to adjust the city's buoyancy. Seawater is pumped into the tanks at set intervals, causing the field to change constantly. Players engage in survival matches using non-lethal paint guns and anchor guns.