Sponsored by appliance giant Electrolux, the futuristic setup will pop up on the rooftop of a different European monument every three months, from the top of Brussels' iconic Parc du Cinquantenaire to mystery locations in Stockholm, Moscow and Zurich.

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Even in Miami he still is at work, finishing up 500 Brickell, which has wireless touchpad screens in every condo and, on the rooftop, a circular "infinity edge" pool that greets the bay and the horizon beyond.

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Rather than having to dig up the streets to lay cable or fiber, WinStar plugs in an antenna on a customer's rooftop and bingo, you have a dial tone.

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