New transport infrastructure and housing are transforming the Saint-Ouen suburb north of Paris, seen here with the Tour Pleyel in the background.

From the windows of “Les Bons Vivants” cafe, a short walk from the athletes’ village for the Paris Olympics, the changes underway in the once run-down neighborhood are instantly visible.

Next door, the makeover of the 130-meter (430 foot) Tour Pleyel skyscraper is nearly complete, turning the 1970s eyesore into a modern landmark that will host a four-star hotel and a pool with panoramic views.

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