Dejima in Nagasaki was the only area for contact with outside countries like Portugal and Holland during 200 years of national isolation.
Now if you go there, you can see a 1/15th scale model of Dejima.
They have also recreated some areas for tourists.
Because of Dejima, Nagasaki started many modern industries like beer, cigarettes, coffee, glasses, etc…
It must have been an exciting place.