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.
La Creche is situated in the Deux-Sevres, Poitou-Charentes region (now part of the Nouvelle-Aquitaine region), in the western-centre of France at 13 km from Niort, the department capital. (General information: La Creche is 341 km from Paris). Popular places to visit nearby include Chateau de Cherveux at 7 km and Niort at 13 km. For more places to visit and local tourist attractions see the map and listings below.