The Abandoned has it all:
A twisted haunted elementary school with children sticking their heads and vanishing into noisy television tests
A hospital that has to be the most sadistic place I have ever seen
A totally sick circus with evil clowns gone wild.
It is a completely sick psychopathic vision of Halloween horror that makes it a must-see destination on the grid. Highly recommended. I felt like vomiting when I left.
(you need to walk out of the black tunnel)