“The term “redemption center” may be a little off. They are mainly different banks and banking facilities that are set up and will have equipment and trained personnel for exchanging foreign currency .
It may just be a bank branch with extra offices in your area. Some may be full blown centers in areas with many foreign currency holders. They have a good idea on demographics from who has bought what in areas.
But many location may just be say, an unused second floor that used to house mortgages or something like that.
A place they can set up machines to check and validate our currency with trained personnel for our exchanges.”