The Amsterdam Airport, entirely in English. Not even Dutch subtitles, just English. People, not knowing what other people spoke, spoke to strangers in English.
I often remember when one of the Dutch ladies on last year’s safari would shake her finger at me and declare that I didn’t appreciate sufficiently that I always got to speak in my mother tongue and I would assert that yes I did appreciate it but that I was in awe of those who could communicate so effortlessly in many languages. It was our dance.