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.
Departing from Perpignan airport, we shall fly to the AlbÃ¨res mountains, frontier between Spain and France! Flying above the Roussillon plain, we shall cross the frontier at the Perthus pass and the Lagarde fortress.