This is the smallest city in the world with a metro and...

​‪@WhatOnEarthIsThisThing‬ and I visit the smallest city in the world to have a full metro system. It's also very steep. Get your travel eSIM now with eSIM io: https://go1.esim.io/Lltr/lukeosullivan2 Watch more from my channel:    • Ones you should watch   Thank you to everyone at Transports publics de la région lausannoise for not only approving my filming request but also fact checking my script. Hi, my name's Luke. I make videos about things I think are pretty mad. That's usually cities, transport, and infrastructure -- but not always.