The answer is a bad holiday destination. A very bad holiday destination. If you have found this because you are falling towards one then let me summarise the good and bad news for you.
There’s scientific reasoning that suggests falling into a black hole could deposit you somewhere else in space time so you could end up back in time… pretty cool.
You are about to experience spaghettification so the chances of you surviving the trip is slight, very slight, some would say non existent but i’m an optimist.
As a consolation lets find out exactly what a black hole is so at least you know what it is that a stretched you as long as a football field. This video explains what a black hole is and how it formed: