Krankenhaus - die Kranken (the sick persons from krank meaning sick) and das Haus (the house). A Krakenhaus could maybe be found at an aquarium as it's a house of octopuses (release the kraken!). Octopuses are more commonly called Tintenfisch tho, which literally means ink fish.

Fun fact the term Hospital while derived from hospitality is mutated for context due to the Knights Hospitallers. They built quite a few outposts that quickly became associated with medicine because pilgrims are stupid.