Description taken from RCPedia.

A large, black tower rears up out of the gloom. Its angles and size seem to change if you blink or look away. The shadows seem to get denser and the air heavier. On the gate, there is a plaque which reads "That is not dead which can eternal lie, And with strange aeons even death may die."

Inside, the tower seems to be much bigger then it appeared. It's dimly lit with black candles and has a spiral staircase leading from floor to floor. Most of the rooms contain books written in unrecognizable languages, alchemical apparatus and the skulls of various strange creatures. Some appear to be empty except for countless symbols and seals drawn on the floor, walls and ceiling. There are only two rooms on the top floor. One is a fairly ordinary master bedroom. The bed is suspended from the ceiling and many decorative swords hang from the wall. The final room, though huge, contains only a message, scratched into the brick wall at the far end. It reads "Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn."