A Disneyland original, the Main Street Train Station is nearly as popular as Sleeping Beauty Castle. Much like the castle, it has gone through several extensive refurbishments (even as I'm typing this, the building is being worked on), yet it remains a classic in the eyes of Disneyland fans.
One should also note that the sign on the train station -- the one reading "DISNEYLAND" -- changes periodically based on the number of guests coming to the park. For example, in recent years the sign has been changed to read "POPULATION: 500,000,000," due to the 500th million guest walking through the gates in late 2004/early 2005.
Unlike other attractions in Disneyland, the Main Street Train Station is one that is practically guaranteed to never be removed. Next time you visit Disneyland, hopefully you'll think of the station in a new light.

