A publicly accessible urban beach entertainment complex is disclosed, with a man-made tropical, pristine-clear lagoon as the centerpiece of the complex, with surrounding entertainment, educational, sports, and commercial facilities, the complex having controlled public access and providing the look and feel of a tropical beach with clear waters and sandy beaches. In addition a method for efficiently utilizing facilities and land that are vacant, underutilized, have limited uses, or that are contiguous to or nearby recreational, educational, sports, or commercial venues is disclosed. The method providing a publicly accessible urban beach entertainment complex with a centerpiece man-made tropical-style pristine-clear lagoon. The method allows for generating revenue and increasing efficiency by pairing vacant sites, underutilized sites, limited use land, or sites that are contiguous to entertainment, educational, sports, and/or commercial venues with urban beach entertainment complexes. The complex preferably has a controlled public access, thereby allowing entrance upon payment of a fee.

An air dome foundation comprises multiple foundation modules (110). The multiple foundation modules (110) are used to be placed on the ground end to end. The foundation modules (110) comprise straight structure and L-shaped structure. The foundation is low in construction cost, short in construction period and suitable for always moving or the situation in which original ground surface can not be modified or damaged.

An upper “hub and spoke” octagon is connected to a lower “hub and spoke” octagon by vertical shafts. Each of the vertices of both the above-ground and below-ground octagons houses a six-part educational/professional center. At the center of each octagon has a central hub that houses items such as restaurants, first aid centers, rock-climbing walls, etc. Each corridor houses at least two educational subjects, such that visitors are entertained and educated as they walk from one unit to another. The vertical shafts can provide experiences such as skydiving simulators, or just stairs that will allow visitors to get some quality exercise as they tour the invention.

An upper “hub and spoke” octagon is connected to a lower “hub and spoke” octagon by vertical shafts. Each of the vertices of both the above-ground and below-ground octagons houses a six-part educational/professional center. At the center of each octagon has a central hub that houses items such as restaurants, first aid centers, rock-climbing walls, etc. Each corridor houses at least two educational subjects, such that visitors are entertained and educated as they walk from one unit to another. The vertical shafts can provide experiences such as skydiving simulators, or just stairs that will allow visitors to get some quality exercise as they tour the invention.

A publicly accessible urban beach entertainment complex is disclosed, with a man-made tropical, pristine-clear lagoon as the centerpiece of the complex, with surrounding entertainment, educational, sports, and commercial facilities, the complex having controlled public access and providing the look and feel of a tropical beach with clear waters and sandy beaches. In addition a method for efficiently utilizing facilities and land that are vacant, underutilized, have limited uses, or that are contiguous to or nearby recreational, educational, sports, or commercial venues is disclosed. The method providing a publicly accessible urban beach entertainment complex with a centerpiece man-made tropical-style pristine-clear lagoon. The method allows for generating revenue and increasing efficiency by pairing vacant sites, underutilized sites, limited use land, or sites that are contiguous to entertainment, educational, sports, and/or commercial venues with urban beach entertainment complexes. The complex preferably has a controlled public access, thereby allowing entrance upon payment of a fee.

A publicly accessible urban beach entertainment complex is disclosed, with a man-made tropical, pristine-clear lagoon as the centerpiece of the complex, with surrounding entertainment, educational, sports, and commercial facilities, the complex having controlled public access and providing the look and feel of a tropical beach with clear waters and sandy beaches. In addition a method for efficiently utilizing facilities and land that are vacant, underutilized, have limited uses, or that are contiguous to or nearby recreational, educational, sports, or commercial venues is disclosed. The method providing a publicly accessible urban beach entertainment complex with a centerpiece man-made tropical-style pristine-clear lagoon. The method allows for generating revenue and increasing efficiency by pairing vacant sites, underutilized sites, limited use land, or sites that are contiguous to entertainment, educational, sports, and/or commercial venues with urban beach entertainment complexes. The complex preferably has a controlled public access, thereby allowing entrance upon payment of a fee.

An arena apparatus for staging a sport with at least one athlete is provided. The arena apparatus includes a floor having a perimeter; and at least one wall at the perimeter and extending upwardly and outwardly from the floor at an angle greater than or equal to fifteen degrees measured from an axis perpendicular to the floor, wherein the angle of the wall prevents the athlete from standing on the wall.

A hotel room includes a series of exterior walls surrounding an interior space, a doorway in a front exterior wall of the series of exterior walls, a vestibule extending from the doorway into the interior space, and first and second bathrooms in the interior space on opposite sides of the vestibule. The configuration of the first bathroom is the same as the configuration of the second bathroom, and the doorway is centered along the front exterior wall.

A transportable breakroom box is disclosed that comprises: a box as a breakroom having a floor space equal to or less than ten square meters; a sliding door; a vaporization filter; a water storage tank that stores water to be supplied to the vaporization filter; and a water supply pump; an exhaust blower; and, one or both of a hanging hook used for hanging, the hanging hook being provided on a shingle of the box, and a floor beam to which forks of a forklift truck can be hooked, wherein, the exhaust blower sucks and discharges air in the box, and sucks outside air through the vaporization filter, and water supplied to the vaporization filter and dripped down from the vaporization filter is collected in the water storage tank.

A transportable breakroom box is disclosed that comprises: a box as a breakroom having a floor space equal to or less than ten square meters; a sliding door; a vaporization filter; a water storage tank that stores water to be supplied to the vaporization filter; and a water supply pump; an exhaust blower; and, one or both of a hanging hook used for hanging, the hanging hook being provided on a shingle of the box, and a floor beam to which forks of a forklift truck can be hooked, wherein, the exhaust blower sucks and discharges air in the box, and sucks outside air through the vaporization filter, and water supplied to the vaporization filter and dripped down from the vaporization filter is collected in the water storage tank.