I have heard things about it existing in some form in Teyvat - where I'm from. People would travel instantly from one place to another using structures placed in certain points. I've never seen one, though...

[Maybe she would have, had she ever been able to travel outside of Mondstadt. Did such constructs even work anymore? There was a great deal in the world that was not fully understood even by the most academic minds... and Vennessa could not claim to be one of them.

The woman leans her head back against the edge of the bath and closes her eyes. All inconveniences aside, this is actually kind of nice.]

A time when multitudes of gods and powerful adepti roamed the land must have been wonderous indeed.