GRAMMAR'S RESPONSE. The word premises is always plural, whether you're referring to the whole of the land and the buildings upon it or just part of the mall (or whatever). So you want are, always. Authority: Merriam-Webster's Collegiate Dictionary, Electronic Edition, Version 1.5.
Yonne is a department in the centre of France, in the Burgundy region. The largest city in the department, and its prefecture (capital), is Auxerre.
Rennes (French: ( listen); French: Rennes, Gallo: Resnn, Breton: Roazhon, Latin: Condate, Civitas Redonum) is a city in the east of Brittany in northwestern France at the confluence of the Ille and the Vilaine. Rennes is the capital of the region of Brittany, as well as the Ille-et-Vilaine department. Rennes's history goes back more than 2,000 years, at a time when it was a small Gallic village named Condate. Together with Vannes and Nantes, it was one of the major cities of the ancient Duchy of Brittany.