There's no way to view this in-game as it has been deleted, and probably will not be added back into the game in the near future, as it has been removed from the game either partially or entirely.
The Metro is an underground location, there's nothing much you can do here, all you have is a Menacing Dummy, a table with Rokakaka fruits(That aren't usable), a normal radio playing the elevator's music and a fire pit. This place has no item spawns. Near it is TheGuestToBlame riding a Bulldozer.
Underground: Most of the metro consists of gray walls and floor and neon color parts as decoration in the walls. You can also see "purple haze" written on the right wall as a reference from Purple Haze but that part was only added in 1.9.7.
Above-ground: The above ground consists of a staircase and 2 light polls.
Cherry:The cherry is located under the staircase. This is an obvious reference from part 3.
Very Secret Room: This room can only be accessed with Time shift or Teleportation all that is has is a miniature version of TheGuestToBlame the creator of ABD doing the Hamon pose. There also used to be a small version at the old map.
Potato chip: this room can only be accessed with Time shift or Teleportation . The secret room is located behind the tunnel near the "purple haze" logo. once you reach the other side, you will encounter an infamous potato chip.
Added on update ???
Upon using King Crimson Time Erase inside the metro you may fall off the map.
Entrance to the metro.
Above the ground.
Menacing Dummy, the fancy radio and rokakaka fruits.