お膝元

Meaning

1. n
   beside a nobleman; close aid (of a nobleman, etc.)
2. n
   place where a high ranking person resides; one's own city (of a shogun, lord, etc.); Imperial capital; Imperial court; (shogun's) headquarters
3. n
   place under one's direct control; one's own turf; one's own backyard

Example sentences

• あの大企業のお膝元らしく巨大工場が立ち並ぶ。

  There's a row of huge factories as though it were the seat of that large corporation.