💗 Schengen
“Have you ever wanted to fly across a border more than 40 times in one minute? No? As of last month, you can do it anyway: By hopping on a swing in the towns of Baarle-Hertog-Nassau, you can fly from the Netherlands into Belgium and back.”
https://europeancorrespondent.com/en/r/borders-are-a-construct-but-this-swing-isnt