Hospital element is closely associated with health and it is very important in Little Alchemy 2, it can be used to combine Ambulance, Doctor, Penicillin, Ruins, Scalpel, and Stethoscope. Making Hospital is not too complicated, after you created Life, Human, Bacteria, Sickness, and Wall, Hospital will be created. Check out the detailed walkthrough and try it yourself.
Fire + Earth = Lava
Lava + Earth = Volcano
Water + Water = Puddle
Water + Puddle = Pond
Water + Pond = Lake
Lake + Lake = Sea
Earth + Sea = Primordial Soup
Volcano + Primordial Soup = Life
Earth + Water = Mud
Air + Air = Pressure
Earth + Pressure = Stone
Air + Stone = Sand
Sand + Mud = Clay
Clay + Life = Human
Small + Life = Bacteria
Bacteria + Human = Sickness
Stone + Stone = Wall
Sickness + Wall = Hospital