Germany became a republic in 1918, ending the reign of the Hohenzollern dynasty. While there are still descendants of the Hohenzollerns, they hold no political power in Germany.
It's important to note that:
* Germany is a federal republic, meaning it's a democracy with an elected government.
* Monarchy was abolished in Germany after World War I, and there are no plans to reinstate it.
While some European countries still have monarchies, Germany is a republic and has no reigning royal family.