Where old planes go to die (eventually)

I spent a week in the Caribbean in early April flying charters out of
San Juan. Our planes were stuffed away out of sight on apron 7 at SJU.
Interesting place there - we shared ramp space with a grounded DC-3, a
pair of Convair 440s, a few freight 1900s & Metros, a hunk of 727
fuselage, and a derelict Mallard & PBY. San Juan is home to Four Star
- a freight company that flies DC-3s (some with the Baseler turboprop
conversion) which is amazing to consider as those planes are 50+ years
old and still in revenue service. Watching the Convairs' engines
start, it became obvious why there's no mosquito problem on the ramp -
you've *never* seen so much smoke from a plane that wasn't on fire...
(note to Dudley H: Did those things puke oil when they were new??) It
kinda added to the outback vibe of the place - where else but the
Caribbean or South America do you see these old props still flying
people/freight? I was hoping to see a DC-6 or -7 but no luck.