: Its birth marked a major shift in how the Tube was built, moving from the cramped, Victorian-era tunnels to the vast, "cathedral-like" spaces seen in its later extensions.
: The Victoria line is noted for having the second youngest fleet of trains in the network as of 2022. Scientific & Biological Research youngest tube
But what qualifies a line as the "youngest tube"? Is it simply the newest extension, or does it require a completely new route, rolling stock, and signaling system? This article explores the engineering marvels, the cities competing for the title, and why transit authorities are racing to build these modern arteries. : Its birth marked a major shift in