Porta Alpina

During the construction of the Gotthard Tunnel--the longest tunnel in the world, at 57 kilometers--planners who were trying to figure out how to divert half of the truck traffic through the Swiss Alps also thought they might want to build the world's deepest train station.

Eventually, they decided to excavate the area where the station would go, but also decided not to build the station any time soon. However, because they excavated it, they can choose to go back and build the station when the need arises.

At Miniatur Wunderland, that time has already come, and this is their representation of what the platform in the station would look like.