There was a videogame that was out when I was a little kid, I forget its name now, but it allowed you to create your own golf courses. I would always make them to be impossible, with insanely long holes and a ridiculous number of obstacles.
I always thought that those type of holes existed only in my childhood fantasies, until I heard about the 15th hole on the Legends Course at Penati Golf Resort in Slovakia.
Jack Nicklaus must have been having a bad day when he designed the 783-yard par 6. It's hard to even fathom how far 783 yards is, so here's some comparisons.