And in Hawaii, WATG is building the U-Sea Marine Habitat, an 80-room undersea hotel, observatory and marine research center.

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In particular, try the public beach at Jumeirah Beach Walk or a sky high bar with a view over the sea, such as Pure Sky Lounge at Hilton Dubai Jumeirah or the Observatory at Dubai Marriott Harbour Hotel.

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Kingdom Tower Riyadh is a striking building that also contains a Four Seasons Hotel, office space and an observatory.

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Other locations leave them up just for the colder months where they substitute for regular ice, including at Disneyland Paris, the John Hancock Observatory and the roof garden of the Out Hotel in New York City.

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It will consist of a five-star hotel, apartments, office space and an observatory.

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