
via Tumblr https://ift.tt/zKMGiu0
My general rule is to take my best guess and hope it's fairly accurate. Occasionally I might also look out a window right after using the bathroom to see if I can spot a landmark. Having said that, if you notice a bathroom marked in the middle of the ocean and it seems like a mistake, it's more likely that it's just a bathroom on a boat or airplane.
Check out the full map and see all the Bathrooms We've Been To.