The iconic Citgo sign that has long punctuated Boston’s skyline is undergoing a refurbishment, and the first component of the new design – the letter “C” – was installed on Wednesday evening. The addition marks the initial step in a broader effort to restore the landmark structure, which has been a familiar visual cue for residents and visitors alike.

The installation was carried out on the familiar steel framework that supports the sign, with crews affixing the newly fabricated “C” to its designated position. The letter is a key element of the updated lettering scheme that will eventually replace the aging original characters. By beginning with the first letter, the project team signaled that the renovation is moving forward in a methodical, staged manner.

Citgo, the petroleum brand whose name appears on the sign, has overseen the undertaking as part of its commitment to preserving the structure’s presence in the city’s visual landscape. While details about the overall timeline have not been disclosed, the placement of the “C” indicates that the work is progressing beyond planning and into physical execution.

The sign, perched on a hill overlooking the harbor, has been a fixture on Boston’s horizon for decades, serving both as an advertisement and as an informal beacon for commuters. Its distinctive red, white and blue lettering has become intertwined with the city’s identity, prompting interest whenever changes are made to its appearance.

Local observers noted the activity on the site and expressed anticipation for the completion of the full refurbishment. The presence of the new “C” was captured in photographs shared by onlookers, highlighting the blend of industrial work and urban scenery that characterizes the project. As the renovation continues, the sign’s evolving look will remain a point of focus for those who track Boston’s changing cityscape.

The work on the Citgo sign is expected to proceed in phases, with each subsequent letter to be installed in turn, ultimately restoring the full name to its prominent position atop the hill.