Small Dungeon Nearby Water
An old forgotten wharf.
N/A; This is a generic dungeon that can be used in random events in attempts to reward the PCs.
Dungeon Master's Guide
This wharf may once have been occupied by someone else, but currently is being used by a powerful wizard or sorcerer of sorts.
They have potions scattered about, books, drawers, and a couple of statues.
There are multiple ways to play this, but in essence: The area only becomes hostile once players start looting things.