Abstract: A sandwich panel including a first planar structural outer layer; a second planar structural outer layer orientated substantially parallel to the first planar structural outer layer; a core layer sandwiched between the first planar structural outer layer and the second planar structural outer layer; and a plurality of openings extending through the core layer in a longitudinal direction substantially parallel to the plane of the first and second planar structural outer layers, wherein the plurality of openings are surrounded on all lateral sides by the core layer.

Abstract: A waterside leisure facility is disclosed which comprises an enclosure, covering and surrounding an area of land mass, an enclosed portion of a larger body of water, the land mass having a shore front adjoined to the portion of the body of water, the enclosure further comprising a dividing wall separating the enclosed portion of water from the remaining body of water a transparent roof, joined to the dividing wall and surrounding the area of land mass, to substantially separate air in the enclosure from ambient air outside the enclosure, while letting light through the roof, water treatment means arranged to maintain the water in the enclosure at a controlled temperature, while circulating water from outside the enclosure through the enclosure; and air conditioning means arranged to maintain the ambient air inside the enclosure at a controlled temperature and/or humidity.

Abstract: A waterside leisure facility is disclosed which comprises an enclosure, covering and surrounding an area of land mass, an enclosed portion of a larger body of water, the land mass having a shore front adjoined to the portion of the body of water, the enclosure further comprising a dividing wall separating the enclosed portion of water from the remaining body of water a transparent roof, joined to the dividing wall and surrounding the area of land mass, to substantially separate air in the enclosure from ambient air outside the enclosure, while letting light through the roof, water treatment means arranged to maintain the water in the enclosure at a controlled temperature, while circulating water from outside the enclosure through the enclosure; and air conditioning means arranged to maintain the ambient air inside the enclosure at a controlled temperature and/or humidity.