Inside the Mount Pleasant tunnels
Across from the main galleries, the ride takes you below the still-famous Mount Pleasant site into platforms and tunnels that once kept letters moving beneath the city for 22 hours a day. The setting is not a replica and not a theme-park invention. That is why even visitors who arrive mostly for family fun often leave talking about the atmosphere underground.
What the 15-minute ride is like
You descend 21 m (70 ft) below street level and move through tunnels as narrow as 2.1 m (7 ft) in places. The train runs at a gentle maximum of 12 kph (7.5 mph), but the experience still feels vivid because of the darkness, the narrow spaces, the sound, and the platform projections. If you dislike confined environments, it is better to be honest with yourself here than brave in the wrong way.
The galleries tell a bigger story
Up above, The Postal Museum stretches far beyond stamps and sorting bags. The collections follow around 500 years of postal communication through objects, uniforms, vehicles, interactive displays, and design history, so the railway becomes one chapter in a far longer national story. That broader context is what stops the visit from feeling like a single gimmick.
1969: a national museum finally opened
The public story took a major step when Queen Elizabeth II opened the National Postal Museum in the City of London in 1969. That first museum gave public access to collections that had been developing behind the scenes for much longer. It is one reason the institution still feels like both an archive and a visitor attraction today.
1998 and 2004: closure, then a reset
The earlier museum closed in 1998 after the sale of its building, which could easily have left the collection hidden again. Instead, the collections were transferred in 2004 to the independent Postal Heritage Trust, creating the structure that eventually made the current museum possible. In practical terms, today's visitor experience starts with that rescue moment.
2017: Farringdon became the new home
The current Postal Museum opened in Farringdon on July 28, 2017, with the full Mail Rail experience following on September 4, 2017 beside Mount Pleasant. That move finally reunited the collections with a purpose-built public home and turned the underground railway itself into part of the visit. What you see now is the strongest version the museum has had yet.