Saint Georges Avenue was not a quiet street. It ran along what had been an important colonial-era route, and the Merchants and Drovers Tavern took its name from the people who passed through it: merchants moving goods, drovers herding livestock to market. The tavern sat on that flow of commerce and travelers, offering shelter and refreshment in the way that roadside inns had done for centuries. Around 1825, after the second period of construction transformed the building from a two-and-a-half-story structure into a three-and-a-half-story one, it began functioning formally as a hotel. By that point it had grown into an institution along the road — the kind of place that accumulated local history the way the building itself accumulated floors.

By the 1960s, the tavern's fate was uncertain. The building was old, its function long obsolete, and the pressures of urban redevelopment were reshaping American cities in ways that rarely favored eighteenth-century wooden structures. The Rahway Historical Society stepped in, purchased the building, and redirected its purpose: rather than an inn, it would become a museum, a center for the historical interpretation of the region. That intervention proved consequential. The building was added to the National Register of Historic Places on November 21, 1978, recognized for its significance in architecture, commerce, and transportation. Throughout most of the 2000s, the Tavern underwent serious restoration work. By September 2021, the second phase of the Restoring Our Legacy Campaign had been completed, with the second through fourth floors and the front facade stabilized and renewed.

The Merchants and Drovers Tavern Museum Association runs historic tours and educational programs, but the most magnetic of their offerings concerns a Victorian-era murder known locally as The Unknown Woman — or the Rahway Jane Doe. The case, which remains unsolved, involves an unidentified woman found dead in Rahway in the nineteenth century, whose identity was never established. It is the kind of story that fits naturally into a building that has absorbed the arrivals and departures of strangers for more than two centuries. The tavern is adjacent to the Rahway Cemetery, which does nothing to reduce the atmospheric weight of the association. In 2017, the cast of the paranormal reality series Ghost Hunters held a fundraiser at the museum — a modern chapter in a building that has always, in one way or another, welcomed the curious.

The fact that Columbia University's Lamont Doherty Earth Sciences Observatory was called in to analyze the building's wooden frame says something about how seriously its history is taken. Dendrochronology — the science of reading tree rings to establish when timber was cut — placed the building's origin firmly in the 1790s, settling a long historical debate. The result is a structure whose age is now precisely understood at a cellular level: wood grown in a particular forest, harvested at a particular moment, shaped into a building that has outlasted nearly everything around it on Saint Georges Avenue. The tavern stands today on the same foundation it was built upon, still tied to the road that made it necessary.