I am curious as to just what exactly you mean by "a dungeon"..and it being fully stocked.

See one persons fully stocked dungeon is quite possibely anothers old wood shed in the back yard.

Or a "public dungeon" fetish bar/club with fancy furnishings and flashing lights.

Or a simple bedroom in ones house with just a whip and some handcuffs in the closet.

All besides the point if you are basically asking what kind of dungeon related fantasy one would like to act out?