The set i played with the most

 The police station was my most played with set. 

I loved the cars and the helicopter.  I remember when I was little and would go to the airport to pick up family at night...I thought the blue lights lining the airports taxiway was neat. The police set had blue lights just like that as I didn't have any transparent blue cylinders til that point.  And to have 9 blue pieces to stack into a cool tube!  I also remember  at the airport when little going out on the observation deck which this lego set had also.  

The frustrating thing about the set was that when the cars and motorcycles left the station, the gray baseplate and lego world of that one set was harshly cut off on to the orange 1970s carpet in our living room.  Not much crime happening on the living room carpet.  Plus any orange convict that escaped blended in the orange carpet and was untraceable.  So my solution was to take the motorcycle,  cop cars and police force and helicopter to the most realistic setting in tve house....the fireplace.   Heres the scene

Yes, through the magic of online house sales, I found pics of the exact fireplace that was the site of search and rescue operations.  All the cop cars would gather and the helicopter would decend off the hearth into the carpet ocean and rescue the guy in the blue suit.  Yes the hearth was so close to the cliffs of the pacific coast.

Now the problem was this room was partially underground and never warm.  And wind always made the area in front of the fireplace drafty.  And the brick just kept cold trapped. The firewood in the holder caused me allergies so I couldn't breathe and the splinters of wood would poke my hands.  But despite all these obstacles,  that blue suit guy survived by climbing on the police helicopter...and then returned guiding the helicopter in.