A rough town which is haven for outlaws is a staple of all adventuring genres. In the fantasy genre the town of Crueloar provides places in which you can share a dinner table with a vampire or learn the ways of dark magic.
A slight rustle of the wind... and it stands before you. A Unicorn, whiter and more beautiful than you ever imagined it. It has deep wonderful eyes, and you can't help but admire this creature. It came to have a look at you, and now it freely goes. You have not the heart to stop it, and it silently vanishes between the trees.
Note: unless specially needed, this encounter should never happen again.