Funny thing about the glass box. If you look down Tremont Street towards the bay you used to get a beautifully framed view of Old North Church. The sightline was considered a historical landmark (there's even a plaque for it in front of the Omni Parker House hotel). The Government Center station completely obstructed the view to Old North. Allegedly this is one of the main reasons that Government center is a glass box, it was the only way the construction was approved.