What if there is no two-way passport control? I arrived on a VCE-CDG
flight once, went through exit control, and from CDG
on to IAD
, total time, about 45 minutes.
With two-way passport control, I have done TLV
once. About 6 hours "officially" in the United Kingdom, and two more in no man's land (LHR
Once I did TLV
, then in the evening, JFK
. Time outside passport control? about 10 hours.
I once went from Germany to Switzerland with a train change in France, probably stayed on French soil for about half an hour.
Monaco, about four hours. If you do it by train without stopping, it can be really quick. I stopped to visit.
One-day trips from Brazil to Argentina, and to Paraguay, about four to five hours in each. Near Iguassu Falls.
Vatican City, about three minutes, crossing St. Peter's square from one side to the other.