Random Places To Find Printmaking

As I was sitting in Singapore Airport the other day,
I saw a group of primary-aged children looking industrious by a large table.
With several hours to wait I decided to see what they were up to.

To my surprise they were making prints!
(or at least I should say taking rubbings from carved stones)
The materials were provided by Singapore Airport.

I momentarily considered joining in, would have been fun to ink them up...

Where is the most unusual place you have seen printmaking???