Homeopathy is very popular in Berlin and is even offered by a number of hospitals. The practice goes back centuries and is based on the idea that all the cures you need can be found in nature. Science views the practice as useless as it’s unregulated, meaning public health insurance won’t pay for the potions. If you’re privately insured, they might. That’s not much of a problem, however, as most homeopathic treatments are inexpensive.