Inauguration of the Berlin U-Bahn's first line

Berlin's U-Bahn network debuted on June 7, 1904, with the opening of the Stammstrecke line from Stralauer Tor to Potsdamer Platz. Designed by engineer Wilhelm II's administration amid rapid urbanization, the electric-powered trains alleviated street congestion in the growing capital. The innovative cut-and-cover construction method and third-rail electrification set standards for future subway systems worldwide. This development enhanced mobility for workers and residents, contributing to Berlin's emergence as a modern metropolis and influencing subway designs across Europe.