The first six seasons of the show were all based in LOCATION@1 and nearby locations -- both real and fictional -- in LOCATION@2 , although occasionally other locations have been featured as well -- most notably , LOCATION@3 , LOCATION@4 , where a portion of the episodes took place during the fourth and sixth seasons .

The first six seasons of the show were all based in LOCATION@1 and nearby locations -- both real and fictional -- in LOCATION@2 , although sometimes other locations have been used as well .
