The House of Secrets is the home of Abel in the Dreaming. Abel was the Biblical "First Victim" and current master storyteller.
The architecture of the house is indeterminate, and actually changes periodically. The same holds true for the inside of the house: the rooms shift about, and one never enters the same room twice. Due to the fact that so many stories were inspired and relayed within the rooms of the old home, the House of Secrets is a focal location at the crossroads into the Dreaming. The Dream Lord was able to access the House of Secrets at will without manifesting inside the mind of a sleeping individual.
Abel lives there with his gargoyle, Goldie. Cain and Abel are often in each other's houses, and it was they who discovered Morpheus upon his return to the dreaming after his captivity in the waking world.[1]