When Londoners talk about the "youngest Tube," they aren't referring to a child riding the rails. They are talking about the Jubilee Line —the baby of the network. While the Metropolitan Line is the grumpy 160-year-old great-grandfather (opened 1863), the Jubilee didn't exist until 1979.
When Londoners talk about the "youngest Tube," they aren't referring to a child riding the rails. They are talking about the Jubilee Line —the baby of the network. While the Metropolitan Line is the grumpy 160-year-old great-grandfather (opened 1863), the Jubilee didn't exist until 1979.