Boston’s iconic Citgo sign might go dark after the building is sold.

From the Globe’s website:

As several prominent development companies angle to buy the nine-building package [Boston University is selling in Kenmore Square], they are weighing a delicate question: how to redevelop them — as any new owner would be likely to do — without blocking or moving the sign so it is no longer so visible from so many places around the city.

Moving the sign and replacing 660 Beacon with a taller building wouldn’t be difficult, said Arthur Krim, a faculty member at Boston Architectural College and the sign’s unofficial historian. But move it much, and the views would be altered forever.

“Sightlines would be skewed,” Krim said. “Anything above 15 stories and it’d be hard to see up there at all.”