London, 2016-Sep-16 — /EPR Retail News/ — For the 33rd European Heritage Days, Kering is inviting the public to explore 40, rue de Sèvres in the 7th arrondissement of Paris, formerly the Laennec Hospital from 1634 to 2000. The listed Historic Monument, now Kering’s and Balenciaga’s head offices, will be open on Saturday 17 and Sunday 18…