Rocky's Bar
Rocky's Bar is a space within Dean Winchester's subconscious which was created by Michael as a means to keep Dean quiet and complaint by offering him contentment. In the bar Dean works alongside a version of Pamela Barnes, while Sam and Castiel are off hunting a ghoul. The scenario also operates on an infinite loop, where a woman offers to buy the bar from Dean, Dean and Pamela flirt and take shots together, while Dean kills the same to vampires who are after him for killing their nest.
Once Dean became aware of the nature of Rocky's, he was able to alter elements, such as when Sam reminds him that Pamela was blinded by Castiel, dream Pamela loses her eyesight. When Michael arrives to stall everyone, rather than eject Michael from his body and release him into the world, Dean chose to instead lock him in storage room, making his body the "Cage" to trap Michael.